total 11665took 0.15s

Metal-free perovskites for non-linear optical materialsJul 15 2019We identify the existence of nonlinear optical (NLO) activity in a number of novel $ABX_3$-type metal-free perovskites, where $A$ is a highly tuneable organic cation, $B$ is a NH$_4$ cation and $X$ a halide anion. Through systematic first-principles calculations, ... More

Turbulent radial thermal counterflow in the framework of the HVBK modelJul 14 2019We apply the coarse-grained Hall-Vinen-Bekarevich-Khalatnikov (HVBK) equations to model the statistically steady-state, turbulent, cylindrically symmetric radial counterflow generated by a moderately large heat flux from the surface of a cylinder immersed ... More

Modeling the computer memory based on the ferromagnet/superconductor multilayersJul 13 2019A model of superconducting computer memory exploiting the orthogonal spin transfer (OST) in the pseudospin valve (PS) that is controlled by the three-terminal Josephson superconducting-ferromagnetic transistor (SFT) is developed. The building blocks of ... More

Ferromagnetic phase transition in topological crystalline insulator thin films: interplay of anomalous Hall angle and magnetic anisotropyJul 12 2019In magnetic topological phases of matter, the quantum anomalous Hall (QAH) effect is an emergent phenomenon driven by ferromagnetic doping, magnetic proximity effects and strain engineering. The realization of QAH states with multiple dissipationless ... More

Thermal conductivity of superfluid $^3$He-B in a narrow channel down to 0.1$T_c$ at the $^4$He crystallization pressureJul 11 2019Our experimental assembly consists of a large main volume and a smaller sinter-filled heat-exchanger volume connected together by a narrow channel. Most of the main volume is filled with saturated $^3$He-$^4$He mixture at its crystallization pressure ... More

Quench Dynamics in 1D Optomechanical ArraysJul 09 2019Non-equilibrium dynamics induced by rapid changes of external parameters is relevant for a wide range of scenarios across many domains of physics. For waves in spatially periodic systems, quenches will alter the bandstructure and generate new excitations. ... More

Rolling with quantum fieldsJul 08 2019We study the dynamics of a classical scalar field that rolls down a linear potential as it interacts bi-quadratically with a quantum field. We explicitly solve the dynamical problem by using the classical-quantum correspondence (CQC). Rolling solutions ... More

Comment on: Observation of a first order phase transition to metal hydrogen near 425 GPaJul 06 2019Loubeyre, Occelli, and Dumas (LOD) [1] claim to have produced metallic hydrogen (MH) at a pressure of 425 GPa, without the necessary supporting evidence of an insulator to metal transition. The paper is much ado about nothing. Most of the results have ... More

Solving the Bethe-Salpeter Equation in Minkowski Space for a Fermion-Scalar systemJul 06 2019The ladder Bethe-Salpeter Equation of a bound (1/2)+ system, composed by a fermion and a scalar boson, is solved in Minkowski space, for the first time. The formal tools are the same already successfully adopted for two-scalar and two-fermion systems, ... More

Motion induced radiation and quantum friction for a moving atomJul 03 2019We study quantum dissipative effects that result from the non-relativistic motion of an atom, coupled to a quantum real scalar field, in the presence of a static imperfect mirror. Our study consists of two parts: in the first, we consider accelerated ... More

Reply to comment on 'Surface thermodynamics and surface stress for deformable bodies'Jul 03 2019The above comment http://dx.doi.org/10.1088/0953-8984/22/42/428001 and a previous letter by the same author reveal a great misunderstanding of what Eulerian and Lagrangian quantities are, and a confusion between the deformation of an element of a surface ... More

How do trapped particles interact with and sample superfluid vortex excitations?Jul 02 2019Particles have been used for more than a decade to visualize and study the dynamics of quantum vortices in superfluid helium. In this work we study how the dynamics of a collection of particles set inside a vortex reflects the motion of the vortex. We ... More

Self-learning projective quantum Monte Carlo simulations guided by restricted Boltzmann machinesJul 01 2019The projective quantum Monte Carlo (PQMC) algorithms are among the most powerful computational techniques to simulate the ground state properties of quantum many-body systems. However, they are efficient only if a sufficiently accurate trial wave function ... More

Nonequilibrium phonon distribution in current-driven nanostructuresJun 29 2019We experimentally demonstrate that electric current applied at cryogenic temperatures to thin-film metallic wires on thermally conducting substrates produces a non-equilibrium phonon distribution. The latter is manifested by the piecewise-linear dependence ... More

Coherent optical control of magnons: ab-initio predictionsJun 28 2019We demonstrate optical control of magnons using femtosecond laser pulses by performing \emph{ab-initio} real-time TDDFT simulations. We predict that the spin-wave dynamics in Fe$_{50}$Ni$_{50}$ can be manipulated by tailoring the applied laser pulse via ... More

Kibble-Zurek creation of half-quantum vortices under symmetry violating biasJun 27 2019Recently, half-quantum vortices -- the analogs of the cosmic Alice strings -- have been observed in the polar phase of superfluid 3He in aerogel. Here we exploit these vortices to study the Kibble-Zurek (KZ) mechanism of defect formation in the non-equilibrium ... More

Quantized Microwave Faraday RotationJun 26 2019The interaction of light with matter in the presence of a static magnetic field gives rise to a wide variety of phenomena, including the Faraday effect whereby the polarization of light is rotated by magnetically induced circular birefringence. We report ... More

Surface thermodynamics, surface stress, equations at surfaces and triple lines for deformable bodiesJun 26 2019The thermodynamics and mechanics of the surface of a deformable body are studied here, following and refining the general approach of Gibbs. It is first shown that the 'local' thermodynamic variables of the state of the surface are only the temperature, ... More

Unconventional phase III of high-pressure solid hydrogenJun 26 2019We reassess the phase diagram of high-pressure solid hydrogen using mean-filed and many-body wave function based approaches to determine the nature of phase III of solid hydrogen. To discover the best candidates for the phase III, Density Functional Theory ... More

Design of compositionally graded contact layers for MOCVD grown high Al-content AlGaN transistorsJun 25 2019In this letter, we design and demonstrate an improved MOCVD grown reverse Al-composition graded contact layer to achieve low resistance contact to MOCVD grown ultra-wide bandgap (UWBG) Al0.70Ga0.30N channel metal semiconductor field-effect transistors ... More

Superionic-like diffusion in an elemental crystal: bcc TitaniumJun 24 2019Recent theoretical investigations [Belonoshko et al. Nature Geoscience 10, 312 (2017)] revealed occurrence of concerted migration of several atoms in bcc Fe at inner-core temperatures and pressures. Here, we combine first-principles and semi-empirical ... More

Dynamic enlargement of a hole in a sheet: crater formation and propagation of cylindrical shock wavesJun 22 2019Predicting the shape of a crater formed by high velocity impact is of interest in several fields. It can aid in design of more efficient protective structures, in forensic analysis of bullet holes, and in understanding the effects of meteorite impact ... More

Toy Model for Vortex Ring-Assisted Particle Drag in Superfluid CounterflowJun 22 2019The interpretation of data obtained from particle image/tracking velocimetry in the study of superfluid flows has been so far a challenging task. Tracking particles (as solid hydrogen or deuterium) are attracted to the cores of quantized vortices, so ... More

Hiding in the crowd: Spectral signatures of overcoordinated hydrogen bond environmentsJun 21 2019Molecules with an excess number of hydrogen-bonding partners play a crucial role in fundamental chemical processes, ranging from the anomalous diffusion in supercooled water to the transport of aqueous proton defects and the ordering of water around hydrophobic ... More

Table-top high-energy 7 um OPCPA and 260 mJ Ho:YLF pump laserJun 19 2019We present the state of the art of a compact high-energy mid-infrared laser system for TW-level 8-cycle pulses at 7 um. This system consists of an Er:Tm:Ho:fiber MOPA which serves as the seeder for a ZGP-based OPCPA chain in addition to a Ho:YLF amplifier ... More

Edge localization of spin waves in antidot multilayers with perpendicular magnetic anisotropyJun 19 2019We study the spin-wave dynamics in nanoscale antidot lattices based on Co/Pd multilayers with perpendicular magnetic anisotropy. Using time-resolved magneto-optical Kerr effect measurements we demonstrate that the variation of the antidot shape introduces ... More

Edge localization of spin waves in antidot multilayers with perpendicular magnetic anisotropyJun 19 2019Jun 23 2019We study the spin-wave dynamics in nanoscale antidot lattices based on Co/Pd multilayers with perpendicular magnetic anisotropy. Using time-resolved magneto-optical Kerr effect measurements we demonstrate that the variation of the antidot shape introduces ... More

Giant and Linear Magnetoresistance in Liquid Metals at Ambient TemperatureJun 19 2019Disorder-induced magnetoresistance has been reported in a range of solid metals and semiconductors, however, the underlying physical mechanism is still under debate because it is difficult to experimentally control. Liquid metals, due to lack of long-range ... More

Influence of Longer Range Transfer of Vapor Interface Modified Caging Constraints on the Spatially Heterogeneous Dynamics of Glass-Forming LiquidsJun 18 2019Based on the Elastically Collective Nonlinear Langevin Equation theory of bulk relaxation in glass-forming liquids, and our recent ideas of how interface-nucleated modification of caging constraints are spatially transferred into the interior of a thick ... More

Topology with broken parity-time symmetryJun 18 2019Topological edge states arise in parity-time ($\mathcal{PT}$)-symmetric non-unitary quantum dynamics but have so far only been discussed in the $\mathcal{PT}$-symmetry-unbroken regime. Here we report the experimental detection of robust topological edge ... More

New concept of bias induced spin circular current: Effects of environmental dephasing and disorderJun 17 2019Analogous to circular spin current in an isolated quantum loop, bias induced spin circular current can also be generated under certain physical conditions in a nanojunction having single and/or multiple loop geometries which we propose first time, to ... More

Voltage matching, étendue and ratchet steps in advanced concept solar cellsJun 16 2019Many advanced solar cell concepts propose surpassing the Shockley Queisser (SQ) limit by introducing multiple quasi-Fermi level separations that are arranged in series and/or in parallel. Exceeding the SQ limit with any parallel arrangement involves intermediate ... More

Many-body Green's function theory of electrons and nuclei beyond Born-Oppenheimer approximationJun 15 2019The method of many body Green's functions is used to describe an arbitrary system of electrons and nuclei in a rigorous manner given the Hamiltonian of Coulombic interactions and kinetic energies. The theory given resolves the problem arising from the ... More

Friedel oscillations in 2D electron gas from spin-orbit interaction in a parallel magnetic fieldJun 14 2019Effects associated with the interference of electron waves around a magnetic point defect in two-dimensional electron gas with combined Rashba-Dresselhaus spin-orbit interaction in the presence of a parallel magnetic field are theoretically investigated. ... More

Antiferromagnetism and spin density waves in Dirac metalsJun 13 2019In this paper we perform mean-field study of possible magnetic instabilities in Dirac metals. We find that Dirac electrons naturally host antiferromagnetic or SDW ground states, though their specific configurations may vary depending on specific model, ... More

Dirac Fermions in Antiferromagnetic FeSn Kagome Lattices with Combined Space Inversion and Time Reversal SymmetryJun 13 2019Symmetry principles play a critical role in formulating the fundamental laws of nature$^{1}$, with a large number of symmetry-protected topological states identified in recent studies of quantum materials$^{2,3}$. As compelling examples, massless Dirac ... More

High pressure melt locus of iron from atom-in-jellium calculationsJun 11 2019Although usually considered as a technique for predicting electron states in dense plasmas, atom-in-jellium calculations can be used to predict the mean displacement of the ion from its equilibrium position in colder matter, as a function of compression ... More

Superheat conductivity and electric activity of superfluid systemsJun 11 2019In this article it is shown that in He\nobreakdash-II placed in a magnetic field $\mathbf{H}$, the heat flow under the influence of a temperature gradient $\nabla T$ causes appearance of an electric field $\mathbf{E}\sim\mathbf{H}\times\nabla T$. This ... More

Full counting statistics of energy transfers in inhomogeneous nonequilibrium states of (1+1)D CFTJun 10 2019Employing the conformal welding technique, we find an exact expression for the Full Counting Statistics of energy transfers in a class of inhomogeneous nonequilibrium states of a (1+1)-dimensional unitary Conformal Field Theory. The expression involves ... More

Nonlocality amplifies echoesJun 09 2019In this paper we will provide smoking-gun signatures of nonlocal interactions while studying reflection and transmission of waves bouncing through two Dirac delta potentials. In particular, we will show that the transmission of waves is less damped compared ... More

Erwin L. Hahn: A Biographical MemoirJun 08 2019Erwin Louis Hahn was one of the most innovative and influential physical scientists in recent history, impacting generations of scientists through his work in nuclear magnetic resonance (NMR), optics, and the intersection of these two fields. Starting ... More

Insights on heterogeneity in blinking mechanisms and non-ergodicity using sub-ensemble statistical analysis of single quantum-dotsJun 08 2019Photo-luminescence intermittency (blinking) in semiconductor nanocrystals (NCs), a phenomenon ubiquitous to single-emitters, is generally considered to be temporally random intensity fluctuations between bright (On) and dark (Off) states. However, individual ... More

2d Galilean Field Theories with Anisotropic ScalingJun 07 2019Jun 12 2019In this work, we study two-dimensional Galilean field theories with global translations and anisotropic scaling symmetries. We show that such theories have enhanced local symmetries, generated by the infinite dimensional spin-l Galilean algebra with possible ... More

2d Galilean Field Theories with Anisotropic ScalingJun 07 2019In this work, we study two-dimensional Galilean field theories with global translations and anisotropic scaling symmetries. We show that such theories have enhanced local symmetries, generated by the infinite dimensional spin-l Galilean algebra with possible ... More

2d Galilean Field Theories with Anisotropic ScalingJun 07 2019Jun 19 2019In this work, we study two-dimensional Galilean field theories with global translations and anisotropic scaling symmetries. We show that such theories have enhanced local symmetries, generated by the infinite dimensional spin-l Galilean algebra with possible ... More

Spin-Wave Optical Elements: Towards Spin-Wave Fourier OpticsJun 05 2019We perform micromagnetic simulations to investigate the propagation of spin-wave beams through spin-wave optical elements. Despite spin-wave propagation in magnetic media being strongly anisotropic, we use axicons to excite spinwave Bessel-Gaussian beams ... More

Photonic quantum simulations of SSH-type topological insulators with perfect state transferJun 03 2019Topological insulators could profoundly impact the fields of spintronics, quantum computing and low-power electronics. To enable investigations of these non-trivial phases of matter beyond the reach of present-day experiments, quantum simulations provide ... More

An XMCD study of magnetism and valence state in iron-substituted strontium titanateJun 03 2019Room temperature ferromagnetism was characterized for thin films of SrTi$_{0.6}$Fe$_{0.4}$O$_{3-{\delta}}$ grown by pulsed laser deposition on SrTiO$_{3}$ and Si substrates under different oxygen pressures and after annealing under oxygen and vacuum conditions. ... More

End-to-end capacities of a quantum communication networkMay 29 2019In quantum mechanics, a fundamental law prevents quantum communications to simultaneously achieve high rates and long distances. This limitation is well known for point-to-point protocols, where two parties are directly connected by a quantum channel, ... More

Quantum Cluster QuasicrystalsMay 28 2019Quasicrystals remain among the most intriguing materials in physics and chemistry. Their structure results in many unusual properties including anomalously low friction as well as poor electrical and thermal conductivity but it also supports superconductivity, ... More

Collective excitations in two-dimensional SU($N$) Fermi gases with tunable spinMay 26 2019We measure collective excitations of a harmonically trapped two-dimensional (2D) SU($N$) Fermi gas of $^{173}$Yb confined to a stack of layers formed by a one-dimensional optical lattice. Quadrupole and breathing modes are excited and monitored in the ... More

The pH-dependent electrostatic interaction of a metal nanoparticle with the MS2 virus-like particlesMay 25 2019The electrostatic interaction of metal nanoparticles with viruses is attracting great interest due to their antiviral activity and their role in enhancing the detection of viruses at ultra-low concentrations. We model the MS2 virus devoid of its single ... More

Direct electrocaloric, structural, dielectric, and electric properties of lead-free ferroelectric material Ba0.9Sr0.1Ti1-xSnxO3 synthesized by semi-wet methodMay 20 2019By using the semi-wet synthesis method, lead-free ferroelectric materials Ba0.9Sr0.1Ti1-xSnxO3 with x = 0, 0.02, 0.05, and 0.10 (abbreviated as BSTS) were prepared and their structural, electric and electrocaloric properties were investigated. The X-ray ... More

Unraveling the Effect of Electron-Electron Interaction on Electronic Transport in High-Mobility Stannate FilmsMay 19 2019Contrary to the common belief that electron-electron interaction (EEI) should be negligible in s-orbital-based conductors, we demonstrated that the EEI effect could play a significant role on electronic transport leading to the misinterpretation of the ... More

Topological Phase Transition Independent of System Non-HermiticityMay 18 2019Non-Hermiticity can vary the topology of system, induce topological phase transition, and even invalidate the conventional bulk-boundary correspondence. Here, we show the introducing of non-Hermiticity without affecting the topological properties of the ... More

Designing of a magnetodielectric system in hybrid organic-inorganic framework, a perovskite layered phosphonate MnO3PC6H4-m-Br.H2OMay 17 2019The research on multiferrocity and magnetoelectric coupling in metal-organic system is rare. Very few hybrid organic-inorganic frameworks (HOIF) exhibit direct magnetoelectric coupling (coupling between spins and dipoles) and also restricted to particular ... More

Transport and Phonon Damping in $^{\bf 4}$HeMay 12 2019The dynamic structure function $S(k,\omega)$ informs about the dispersion and damping of excitations. We have recently (Phys. Rev. B {\bf 97}, 184520 (2018)) compared experimental results for $S(k,\omega)$ from high-precision neutron scattering experiment ... More

Optical heterodyne imaging of magnons in 1D magnonic crystalsMay 12 2019Periodic modulation of magnetic permeability by artificial structures called magnonic crystals results in modifying the band structures of magnetostatic modes. Magnonic crystal could be leveraged to manipulate propagation and localization of magnons in ... More

Optical heterodyne imaging of magnetostatic modes in 1D magnonic crystalsMay 12 2019Jul 05 2019We demonstrate a real-space imaging of heterodyne signal of light that is produced as a result of the Brillouin light scattering by coherently driven magnons in magnetostatic modes. With this imaging technique, we characterize surface magnetostatic modes ... More

Polaronic inter-acceptor hopping transport in intrinsically doped nickel oxideMay 09 2019In this work, we revisit the issue of the nature of electronic transport in nickel oxide (NiO) and show that the widely used model of free small polaron hopping, initially raised to characterize transport in high-purity samples, is not appropriate for ... More

Non-equilibrium quantum phase transition in a spinor quantum gas in a lattice coupled to a membraneMay 09 2019Recently, a novel kind of hybrid atom-optomechanical system, consisting of atoms in a lattice coupled to a membrane, has been experimentally realized [Vochezer {\it et al.,} Phys. Rev. Lett. \textbf{120}, 073602 (2018)], which promises a viable contender ... More

Non-linear Fluctuating Hydrodynamics with many conserved fields: the case of a 3D anharmonic chainMay 08 2019We propose a model for a chain vibrating in 3 dimensions (3D), with first neighbors anharmonic interatomic potential which depends on their distance, and subjected to an external tension. In the framework of the non-linear fluctuating hydrodynamic theory ... More

Non-linear Fluctuating Hydrodynamics with many conserved fields: the case of a 3D anharmonic chainMay 08 2019Jun 26 2019We propose a model for a chain vibrating in 3 dimensions (3D), with first neighbors anharmonic interatomic potential which depends on their distance, and subjected to an external tension. In the framework of the non-linear fluctuating hydrodynamic theory ... More

Demonstration of full tensor current density imaging using ultra-low field MRIMay 08 2019Direct imaging of impressed dc currents inside the head can provide valuable conductivity information, possibly improving electro-magnetic neuroimaging. Ultra-low field magnetic resonance imaging (ULF MRI) at $\mu$T Larmor fields can be utilized for current ... More

Principles of Information Storage in Small-Molecule MixturesMay 06 2019Molecular data systems have the potential to store information at dramatically higher density than existing electronic media. Some of the first experimental demonstrations of this idea have used DNA, but nature also uses a wide diversity of smaller non-polymeric ... More

Assisted distillation of Gaussian resourcesMay 06 2019In spite of their outstanding experimental relevance, Gaussian operations in continuous-variable quantum systems are subjected to fundamental limitations, as it is known that general resources cannot be distilled within the Gaussian paradigm. We show ... More

Lattice dynamics and phase stability of rhombohedral antimony under high pressureMay 06 2019The high pressure lattice dynamics of rhombohedral antimony have been studied by a combination of diffuse scattering and inelastic x-ray scattering. The evolution of the phonon behavior as function of pressure was analyzed by means of two theoretical ... More

Expectation value of $p^6$ in continuous two-piece symmetric potential wellsMay 06 2019Earlier, potentials like square well and several other half-potential wells with discontinuous jump have been found to have the expectation value $<\! p^6 \!>$ to be divergent for all bound states. Here, we consider two-piece symmetric potential wells ... More

Phonon wind and drag of excitons in monolayer semiconductorsMay 05 2019We study theoretically the non-equilibrium exciton transport in monolayer transition metal dichalcogenides. We consider the situation where excitons interact with non-equilibrium phonons, e.g., under the conditions of localized excitation where a ``hot ... More

Plasticity induced superclimb in solid Helium-4: Direct and inverse effectsMay 04 2019During the last decade experimental evidence is building that the mass supertransport through solid Helium-4 as well as the anomalously large matter accumulation in the bulk -- the giant isochoric compressibility (aka the syringe effect) -- are both supported ... More

Plasticity induced superclimb in solid Helium-4: Direct and inverse effectsMay 04 2019May 10 2019During the last decade experimental evidence is building that the mass supertransport through solid Helium-4 as well as the anomalously large matter accumulation in the bulk -- the giant isochoric compressibility (aka the syringe effect) -- are both supported ... More

Exotic pairing state in quasicrystalline superconductors under magnetic fieldMay 04 2019We theoretically study the effect of a magnetic field on quasicrystalline superconductors, by modelling them as the attractive Hubbard model on the Penrose-tiling structure. We find that at low temperatures and under a high magnetic field there appears ... More

Optimization and learning of quantum programsMay 03 2019A programmable quantum processor is a fundamental model of quantum computation. In this model, any quantum channel can be approximated by applying a fixed universal quantum operation onto an input state and a quantum `program' state, whose role is to ... More

Convex optimization of programmable quantum computersMay 03 2019A fundamental model of quantum computation is the programmable quantum gate array. This is a quantum processor which is fed by a program state that induces a corresponding quantum operation on input states. While being programmable, any finite-dimensional ... More

First Principles Study of Electronic Structure and Fermi Surface in Rare-earth Filled Skutterudites RPt4Ge12May 01 2019Experiments on rare-earth filled skutterudites demonstrate an intriguing array of thermodynamic, transport and superconducting properties, and bring to fore theoretical challenges posed by f-electron systems. First principle calculations based density ... More

Ultrathin complex oxide nanomechanical resonatorsApr 30 2019Complex oxide thin films and heterostructures exhibit a profusion of exotic phenomena, often resulting from the intricate interplay between film and substrate. Recently it has become possible to isolate epitaxially grown single-crystalline layers of these ... More

Quantum Evaporation of Classical BreathersApr 29 2019We apply the recently discovered classical-quantum correspondence (CQC) to study the quantum evaporation of breathers in an extended sine-Gordon model. We present numerical results for the decay rate of the breather as a function of the coupling strength ... More

Certified Quantum Measurement of Majorana FermionsApr 27 2019We present a quantum self-testing protocol to certify measurements of fermion parity involving Majorana fermion modes. We show that observing a set of ideal measurement statistics implies anti-commutativity of the implemented Majorana fermion parity operators, ... More

Experimental demonstration of asymmetric diffraction based on a passive parity-time-symmetric acoustic gratingApr 26 2019Passive parity-time-symmetric medium provides a feasible scheme to investigate non-Hermitian systems experimentally. Here, we design a passive PT-symmetric acoustic grating with a period equal to exact PT-symmetric medium. This treatment enhances the ... More

Galactic dynamics and long-range quantum gravityApr 26 2019We explore in a systematic way the possibility that long-range quantum gravity effects could play a role at galactic scales and could be responsible for the phenomenology commonly attributed to dark matter. We argue that the presence of baryonic matter ... More

Galactic dynamics and long-range quantum gravityApr 26 2019May 06 2019We explore in a systematic way the possibility that long-range quantum gravity effects could play a role at galactic scales and could be responsible for the phenomenology commonly attributed to dark matter. We argue that the presence of baryonic matter ... More

Fractonic Chern-Simons and BF theoriesApr 25 2019Fracton order is an intriguing new type of order which shares many common features with topological order, such as topology-dependent ground state degeneracies, and excitations with mutual statistics. However, it also has several distinctive geometrical ... More

On asymptotic behaviour in truncated conformal space approachApr 21 2019The Truncated conformal space approach (TCSA) is a numerical technique for finding finite size spectrum of Hamiltonians in quantum field theory described as perturbations of conformal field theories. The truncation errors of the method have been systematically ... More

Sub-terahertz ferrimagnetic spin-transfer torque oscillatorApr 19 2019A theory of magnetization dynamics in ferrimagnetic materials with antiparallel aligned spin sub-lattices under action of spin-transfer torques (STT) is developed. We consider magnetization dynamics in GdFeCo layers in two cases of magnetic anisotropy: ... More

Spatial dispersion of the high-frequency conductivity of two-dimensional electron gas subjected to a high electric field: collisionless caseApr 18 2019We present the analysis of high-frequency (dynamic) conductivity with the spatial dispersion, $\sigma (\omega, {\bf q})$, of two-dimensional electron gas subjected to a high electric field. We found that at finite wavevector, ${\bf q}$, and at high fields, ... More

Magnonic Analogue Black/White Hole Horizon in Superfluid $^3$He-B: experimentApr 18 2019We provide experimental details of the first experiment made in zero temperature limit ($\sim$ 600\,$\mu$K) studying the magnonic black/white hole horizon analogue using absolutely pure physical system based on the spin superfluidity in superfluid $^3$He-B. ... More

A Weyl geometric model for thermo-mechanics of solids with metrical defectsApr 15 2019We seek a rational route to large-deformation, thermo-mechanical modeling of solids with metrical defects. It assumes the reference and deformed geometries to be of the Weyl type and introduces the Weyl one-form -- an additional set of degrees of freedom ... More

Mode I and II Interlaminar Fracture in Laminated Composites: A Size Effect StudyApr 15 2019This work investigates the mode I and II interlaminar fracturing behavior of laminated composites and the related size effects. Fracture tests on geometrically scaled Double Cantilever Beam (DCB) and End Notch Flexure (ENF) specimens were conducted to ... More

Vortex Lattice in a Rotating Holographic SuperfluidApr 14 2019By utilizing the AdS/CFT correspondence, we explore the dynamics of strongly coupled superfluid vortices in a disk with a constant angular velocity. Each vortex in the vortex lattice is quantized with vorticity one from direct inspection of its phase. ... More

Vortex Lattice in a Rotating Holographic SuperfluidApr 14 2019May 03 2019By utilizing the AdS/CFT correspondence, we explore the dynamics of strongly coupled superfluid vortices in a disk with constant angular velocity. Each vortex in the vortex lattice is quantized with vorticity one from the direct inspection of their phases. ... More

Coarse-grained Hydrodynamics of turbulent superfluids: HVBK vs HST. Comment to discussion section of INT 2019-1a programApr 14 2019Apr 17 2019In the comment I develop a critical analysis of the use of the HVBK method for the study of three-dimensional turbulent flows of superfluids. The conception of the vortex bundles forming the structure of quantum turbulence is controversial and does not ... More

Aharonov-Bohm rings in de Sitter expanding universeApr 14 2019Apr 17 2019The $(1+3)$-dimensional Dirac equation of the fermions moving in ideal Aharonov-Bohm rings in the de Sitter expanding universe is used for deriving the exact expressions of the general relativistic partial currents and corresponding energies. In the de ... More

Aharonov-Bohm rings in de Sitter expanding universeApr 14 2019The $(1+3)$-dimensional Dirac equation of the fermions moving in ideal Aharonov-Bohm rings in the de Sitter expanding universe is used for deriving the exact expressions of the general relativistic partial currents and corresponding energies. In the de ... More

Radiofrequency driving of coherent electron spin dynamics in $n$-GaAs detected by Faraday rotationApr 10 2019We suggest a new pump-probe method for studying semiconductor spin dynamics based on pumping of carrier spins by a pulse of oscillating radiofrequency (RF) magnetic field and probing by measuring the Faraday rotation of a short laser pulse. We demonstrate ... More

Radiofrequency driving of coherent electron spin dynamics in $n$-GaAs detected by Faraday rotationApr 10 2019Apr 24 2019We suggest a new pump-probe method for studying semiconductor spin dynamics based on pumping of carrier spins by a pulse of oscillating radiofrequency (rf) magnetic field and probing by measuring the Faraday rotation of a short laser pulse. We demonstrate ... More

Two-photon Rabi-Hubbard and Jaynes-Cummings-Hubbard models: photon pair superradiance, Mott insulator and normal phasesApr 10 2019Apr 13 2019We study the ground state phase diagrams of two-photon Dicke, the one-dimensional Jaynes-Cummings-Hubbard (JCH), and Rabi-Hubbard (RH) models using mean field, perturbation, quantum Monte Carlo (QMC), and density matrix renormalization group (DMRG) methods. ... More

Two-photon Rabi-Hubbard and Jaynes-Cummings-Hubbard models: photon pair superradiance, Mott insulator and normal phasesApr 10 2019We study the ground state phase diagrams of two-photon Dicke, the one-dimensional Jaynes-Cummings-Hubbard (JCH), and Rabi-Hubbard (RH) models using mean field, perturbation, quantum Monte Carlo (QMC), and density matrix renormalization group (DMRG) methods. ... More

The Quantum Cocktail Party ProblemApr 10 2019Apr 16 2019The cocktail party problem refers to the famous selective attention problem of how to find out the signal of each individual sources from signals of a number of detectors. In the classical cocktail party problem, the signal of each source is a sequence ... More

Modeling tumorspheres reveals cancer stem cell niche building and plasticityApr 09 2019Cancer stem cells have been shown to be critical to the development of a variety of solid cancers. The precise interplay mechanisms between cancer stem cells and the rest of a tissue are still not elucidated. To shed light on the interactions between ... More

Modeling tumorspheres reveals cancer stem cell niche building and plasticityApr 09 2019May 14 2019Cancer stem cells have been shown to be critical to the development of a variety of solid cancers. The precise interplay mechanisms between cancer stem cells and the rest of a tissue are still not elucidated. To shed light on the interactions between ... More