Results for "Yang Bai"

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Lepton Portal Dark MatterFeb 26 2014We study a class of simplified dark matter models in which dark matter couples directly with a mediator and a charged lepton. This class of Lepton Portal dark matter models has very rich phenomenology: it has loop generated dark matter electromagnetic ... More
Chromo-Rayleigh Interactions of Dark MatterJun 23 2015For a wide range of models, dark matter can interact with QCD gluons via chromo-Rayleigh interactions. We point out that the Large Hadron Collider (LHC), as a gluon machine, provides a superb probe of such interactions. In this paper, we introduce simplified ... More
Dips at CollidersJul 23 2014Aug 14 2014We categorize new physics signatures that manifest themselves as a "dip" structure at colliders. One potential way to realize a dip is to require interactions to be zero when all particles are mass on-shell, but not if one or more are mass off-shell. ... More
Collider Tests of the Renormalizable Coloron ModelFeb 08 2018The coloron, a massive version of the gluon present in gauge extensions of QCD, has been searched for at the LHC as a dijet or top quark pair resonance. We point out that in the Renormalizable Coloron Model (ReCoM) with a minimal field content to break ... More
Weakly Interacting Stable PionsApr 30 2010Dec 24 2010An unbroken discrete symmetry, analogous to G-parity in QCD, exists in standard model extensions with vector-like coupling of electroweak SU(2) to "hidden sector" fermions that are confined by a strong gauge force. For an irreducible SU(2) representation ... More
Dilaton-assisted Dark MatterSep 08 2009Jan 07 2010A dilaton could be the dominant messenger between Standard Model fields and dark matter. The measured dark matter relic abundance relates the dark matter mass and spin to the conformal breaking scale. The dark matter-nucleon spin-independent cross section ... More
Quark Mass Ratios and Mixing Angles from SU(3) Family Gauge SymmetryMar 14 2006Mar 24 2006We explore a framework for the computation of quark mass ratios and CKM mixing angles based on an SU(3) family gauge symmetry. The four ratios md/mb, ms/mb, mu/mt, and mc/mt can be fit at one-loop in the family gauge interaction. The same is true of the ... More
How Much Frequency Can Be Reused in 5G Cellular Networks---A Matrix Graph ModelJan 19 2014Apr 11 2014The 5th Generation cellular network may have the key feature of smaller cell size and denser resource employment, resulted from diminishing resource and increasing communication demands. However, small cell may result in high interference between cells. ... More
Geometric Compatibility of IceCube TeV-PeV Neutrino Excess and its Galactic Dark Matter OriginNov 22 2013We perform a geometric analysis for the sky map of the IceCube TeV-PeV neutrino excess and test its compatibility with the sky map of decaying dark matter signals in our galaxy. Using both Kolmogorov-Smirnov and the likelihood-ratio tests, we have found ... More
Hydrogen Axion Star: Metallic Hydrogen Bound to a QCD Axion BECDec 01 2016As a cold dark matter candidate, the QCD axion may form Bose-Einstein condensates, called axion stars, with masses around $10^{-11}\,M_{\odot}$. In this paper, we point out that a brand new astrophysical object, a Hydrogen Axion Star (HAS), may well be ... More
Beauty-full TetraquarksNov 30 2016Dec 02 2016In this article we present a calculation of the $bb\bar{b}\bar{b}$ tetraquark ground-state energy using a diffusion Monte Carlo method to solve the non-relativistic many-body system. The static potential for the four quark system is chosen to align with ... More
Mini Little Higgs and Dark MatterJan 10 2008Aug 25 2008We construct a little Higgs model with the most minimal extension of the standard model gauge group by an extra U(1) gauge symmetry. For specific charge assignments of scalars, an approximate U(3) global symmetry appears in the cutoff-squared scalar mass ... More
Effect of interfacial strain on spin injection and spin polarization of Co2CrAl/NaNbO3/Co2CrAl magnetic tunneling junctionApr 03 2012First-principles calculations were carried out to investigate interfacial strain effects on spin injection and spin polarization of a magnetic tunnel junction consisting of half-metallic full-Heusler alloy Co2CrAl and ferroelectric perovskite NaNbO3. ... More
Origin of the X-rays and Possible GeV-TeV Emission from the Western Hot Spot Of Pictor AMay 30 2009Pictor A is a nearby Fanaroff-Riley class II (FR II) radio galaxy with a bright hot spot, the western hot spot. Observation of high polarization in the optical emission of the hot spot indicates that the optical emission could be synchrotron radiation ... More
Up Sector of Minimal Flavor Violation: Top Quark Properties and Direct D meson CP violationMay 23 2013Minimal Flavor Violation in the up-type quark sector leads to particularly interesting phenomenology due to the interplay of flavor physics in the charm sector and collider physics from flavor changing processes in the top sector. We study the most general ... More
2HDM Portal Dark Matter: LHC data and the Fermi-LAT 135 GeV LineDec 21 2012We study a two Higgs doublet model augmented by a scalar dark matter particle that provides an excellent fit to the LHC Higgs data and the Fermi-LAT 135 GeV line. The heavy CP-even Higgs boson, which predominantly mediates annihilation and scattering, ... More
Sinusoidally Modulated Vacuum Rabi Oscillation of a Two-Level Atom in an Optomechanical CavityJul 20 2015We study the coherent dynamics of an excited two-level atom in a vacuum optomechanical cavity and find that the original atom-cavity Rabi oscillation is sinusoidally modulated by the light-mechanics coupling as the Rabi splitting is on resonance with ... More
Thermodynamical Properties and Quasi-localized Energy of the Stringy Dyonic Black Hole SolutionOct 31 2011In this article, we calculate the heat flux passing through the horizon $. {\bf TS}|_{r_h}$ and the difference of energy between the Einstein and M{\o}ller prescription within the region ${\cal M}$, in which is the region between outer horizon ${\cal ... More
LHC Predictions from a Tevatron Anomaly in the Top Quark Forward-Backward AsymmetryJan 27 2011We examine the implications of the recent CDF measurement of the top-quark forward-backward asymmetry, focusing on a scenario with a new color octet vector boson at 1-3 TeV. We study several models, as well as a general effective field theory, and determine ... More
Valley detection using a graphene gradual pn junction with spin-orbit coupling: an analytical conductance calculationJan 06 2016Graphene pn junction is the brick to build up variety of graphene nano-structures. The analytical formula of the conductance of graphene gradual pn junctions in the whole bipolar region has been absent up to now. In this paper, we analytically calculated ... More
Effect of inhomogeneous magnetic flux on double-dot Aharonov-Bohm InterferometerJul 03 2003Apr 14 2004The influence of the inhomogeneous distribution of the magnetic flux on quantum transport through coupled double quantum dots embedded in an Aharonov-Bohm interferometer are investigated. We show that the effective tunnelling coupling between two dots ... More
Determination of optimal reversed field with maximal electrocaloric cooling by a direct entropy analysisAug 11 2016Aug 30 2016Application of a negative field on a positively poled ferroelectric sample can enhance the electrocaloric cooling and appears as a promising method to optimize the electrocaloric cycle. Experimental measurements show that the maximal cooling does not ... More
Enhancement of the electrocaloric cooling by electric field reversal: simulation and experimentMar 25 2016Jul 11 2016An improved thermodynamic cycle is proposed, where the cooling effect of an electrocaloric refrigerant is enhanced by applying a reversed electric field. In contrast to conventional adiabatic heating or cooling by on-off cycles of the external electric ... More
General monogamy relation of multi-qubit systems in terms of squared Rényi-$α$ entanglementDec 09 2015We prove that the squared R\'{e}nyi-$\alpha$ entanglement (SR$\alpha$E), which is the generalization of entanglement of formation (EOF), obeys a general monogamy inequality in an arbitrary $N$-qubit mixed state. Furthermore, for a class of R\'{e}nyi-$\alpha$ ... More
Complexities Approach to Two Problems In Number TheoryOct 13 2016Oct 21 2016By Kolmogorov Complexity,two number-theoretic problems are solved in different way than before,one problem is Maxim Kontsevich and Don Bernard Zagier's Problem 3 \emph{Exhibit at least one number which does not belong to} $ \mathcal{P}$ (period number) ... More
Composite Octet Searches with Jet SubstructureJul 18 2011Many new physics models with strongly interacting sectors predict a mass hierarchy between the lightest vector meson and the lightest pseudoscalar mesons. We examine the power of jet substructure tools to extend the 7 TeV LHC sensitivity to these new ... More
A Light Dilaton in Walking Gauge TheoriesJun 22 2010Dec 24 2010We analyze the existence of a dilaton in gauge theories with approximate infrared conformal symmetry. To the extent that these theories are governed in the infrared by an approximate fixed point (walking), the explicit breaking of the conformal symmetry ... More
Topological PionsMar 15 2010Dec 24 2010We study the collider signatures of new pions, composite particles which emerge from a TeV-scale, confining gauge theory with vector-like matter. Similar to the neutral pion in QCD, these new pions mainly decay into a pair of standard model (SM) gauge ... More
Coloron-assisted Leptoquarks at the LHCJul 16 2014Recent searches for a first-generation leptoquark by the CMS collaboration have shown around 2.5 sigma deviations from Standard Model predictions in both the eejj and e nu jj channels. Furthermore, the eejj invariant mass distribution has another 2.8 ... More
A dislocation-based explanation of quasi-elastic release in shock-loaded aluminumSep 27 2016A novel explanation of the quasielastic release phenomenon in shock compressed aluminum is presented. A dislocation-based model, taking into account dislocation substructures and evolution, is applied to simulate the elastic plastic response of both single ... More
Spin wave and spin flip in hexagonal LuMnO3 single crystalJul 21 2016Manipulate and control of spin wave and spin flip are crucial for future developments of magnonic and spintronic devices. We present that the spin wave in hexagonal LuMnO3 single crystal can be selectively excited with laser polarization perpendicular ... More
SuperbumpsMar 23 2016For a wide range of supersymmetric models, there is a chiral superfield whose scalar and pseudo-scalar have approximately degenerate masses and couplings to Standard Model particles. At colliders, they may show up as "superbumps": a pair of resonances ... More
The Scale of Dark QCDJun 19 2013Mar 26 2014Most of the mass of ordinary matter has its origin from quantum chromodynamics (QCD). A similar strong dynamics, dark QCD, could exist to explain the mass origin of dark matter. Using infrared fixed points of the two gauge couplings, we provide a dynamical ... More
Stability and phase transition of localized modes in Bose-Einstein condensates with both two- and three-body interactionsJul 05 2015We investigate the stability and phase transition of localized modes in Bose-Einstein Condensates (BECs) in an optical lattice with the discrete nonlinear Schr\"{o}dinger model by considering both two- and three-body interactions. We find that there are ... More
Measuring the Dark Force at the LHCFeb 02 2009Aug 01 2009A long-range ``dark force'' has recently been proposed to mediate the dark matter (DM) annihilation. If DM particles are copiously produced at the Large Hadron Collider (LHC), the light dark force mediator will also be produced through radiation. We demonstrate ... More
Topologically trivial and nontrivial edge bands in graphene induced by irradiationJan 06 2016Jun 27 2016We proposed a minimal model to describe the Floquet band structure of two-dimensional materials with light-induced resonant inter-band transition. We applied it to graphene to study the band features caused by the light irradiation. Linearly polarized ... More
Selective distillation phenomenon in two-species Bose-Einstein condensates in open boundary optical latticesAug 01 2015Feb 01 2016We investigate the formation of discrete breathers (DBs) and the dynamics of the mixture of two-species Bose-Einstein condensates (BECs) in open boundary optical lattices using the discrete nonlinear Schr\"{o}dinger equations. The results show that the ... More
Dark Matter Jets at the LHCSep 27 2011We argue that dark matter particles which have strong interactions with the Standard Model particles are not excluded by current astrophysical constraints. These dark matter particles have unique signatures at colliders; instead of missing energy, the ... More
Fermion Portal Dark MatterAug 02 2013Jun 23 2014We study a class of simplified dark matter models in which one dark matter particle couples with a mediator and a Standard Model fermion. In such models, collider and direct detection searches probe complimentary regions of parameter space. For Majorana ... More
Top-antitop and Top-top Resonances in the Dilepton Channel at the CERN LHCSep 26 2008Apr 12 2009We perform a model-independent study for top-antitop and top-top resonances in the dilepton channel at the Large Hadtron Collider. In this channel, we can solve the kinematic system to obtain the momenta of all particles including the two neutrinos, and ... More
Large N (=3) Neutrinos and Random Matrix TheoryOct 08 2012Nov 06 2012The large N limit has been successfully applied to QCD, leading to qualitatively correct results even for N=3. In this work, we propose to treat the number N=3 of Standard Model generations as a large number. Specifically, we apply this idea to the neutrino ... More
Complexities Approach to Two Problems In Number TheoryOct 13 2016Oct 14 2016By Kolmogorov Complexity,two number-theoretic problems are solved in different way than before,one problem is Maxim Kontsevich and Don Bernard Zagier's Problem 3 \emph{Exhibit at least one number which does not belong to} $ \mathcal{P}$ (period number) ... More
A Unified Dark Matter Model in sUEDNov 04 2008May 26 2009We propose a dark matter model with standard model singlet extension of the universal extra dimension model (sUED) to explain the recent observations of ATIC, PPB-BETS, PAMELA and DAMA. Other than the standard model fields propagating in the bulk of a ... More
Improving the Top Quark Forward-Backward Asymmetry Measurement at the LHCJun 24 2011At the LHC, top quark pairs are dominantly produced from gluons, making it difficult to measure the top quark forward-backward asymmetry. To improve the asymmetry measurement, we study variables that can distinguish between top quarks produced from quarks ... More
Gamma Lines without a Continuum: Thermal Models for the Fermi-LAT 130 GeV Gamma LineAug 20 2012Recent claims of a line in the Fermi-LAT photon spectrum at 130 GeV are suggestive of dark matter annihilation in the galactic center and other dark matter-dominated regions. If the Fermi feature is indeed due to dark matter annihilation, the best-fit ... More
Reach the Bottom Line of the Sbottom SearchApr 23 2012We propose a new search strategy for directly-produced sbottoms at the LHC with a small mass splitting between the sbottom and its decayed stable neutralino. Our search strategy is based on boosting sbottoms through an energetic initial state radiation ... More
Efficient spin injection into graphene through a tunnel barrier: overcoming the spin conductance mismatchNov 04 2014Employing first-principles calculations, we investigate efficiency of spin injection from a ferromagnetic (FM) electrode (Ni) into graphene and possible enhancement by using a barrier between the electrode and graphene. Three types of barriers, h-BN, ... More
Epidemic spreading and immunization with identical infectivityNov 09 2006Apr 04 2007In this paper, a susceptible-infected-susceptible (SIS) model with identical infectivity, where each node is assigned with the same capability of active contacts, $A$, at each time step, is presented. We found that on scale-free networks, the density ... More
Interference-induced enhancement of field entanglement in a microwave-driven V-type single-atom laserApr 04 2014We investigate the generation and the evolution of two-mode continuous-variable (CV) entanglement from system of a microwave-driven V-type atom in a quantum beat laser. By taking into account the effects of spontaneously generated quantum interference ... More
Positive and negative electrocaloric effect in BaTiO$_3$ in the presence of defect dipolesJul 17 2015Mar 21 2016The influence of defect dipoles on the electrocaloric effect (ECE) in acceptor doped BaTiO$_3$ is studied by means of lattice-based Monte-Carlo simulations. A Ginzburg-Landau type effective Hamiltonian is used. Oxygen vacancy-acceptor associates are described ... More
Identifying Dark Matter Event Topologies at the LHCDec 08 2010Assuming dark matter particles can be pair-produced at the LHC from cascade decays of heavy particles, we investigate strategies to identify the event topologies based on the kinematic information of final state visible particles. This should be the first ... More
Heavy octets and Tevatron signals with three or four b jetsDec 28 2010Hypothetical color-octet particles of spin 0, pair-produced at hadron colliders through their QCD coupling, may lead to final states involving three or four b jets. We analyze kinematic distributions of the 3b final state that differentiate the scalar ... More
CP Violating Contribution to Delta Gamma in the B_s System from Mixing with a Hidden PseudoscalarJul 04 2010Recent evidence for a CP violating asymmetry in the semileptonic decays of B_s mesons cannot be accommodated within the Standard Model. Such an asymmetry can be explained by new physics contributions to Delta B=2 components of either the mass matrix or ... More
Resonant Dark MatterSep 16 2009Nov 11 2009It is usually assumed that dark matter direct detection is sensitive to a large fraction of the dark matter (DM) velocity distribution. We propose an alternative form of dark matter-nucleus scattering which only probes a narrow range of DM velocities ... More
Strongly enhanced critical current density in Fe-sheathed MgB2 tapes by stearic acid and stearate dopingJan 16 2007Feb 14 2007Fe-sheathed MgB2 tapes with cheap stearic acid, Mg stearate and Zn stearate doping were prepared through the in situ powder-in-tube method. It is found that Jc, Hirr, and Hc2 were significantly enhanced by doping. Compared to the pure tapes, Jc for all ... More
Natural Milli-Charged InflationMay 26 2014We construct a natural inflation model with the inflaton as a linear combination of the fifth components of Abelian gauge fields in a five-dimensional theory. A seesaw mechanism is introduced to provide a natural milli-charge for matter fields under one ... More
State transition and electrocaloric effect of BaZr$_{x}$Ti$_{1-x}$O$_3$: simulation and experimentAug 17 2016The electrocaloric effect (ECE) of BaZr$_{x}$Ti$_{1-x}$O$_3$ (BZT) is closely related to the relaxor state transition of the materials. This work presents a systematic study on the ECE and the state transition of the BZT, using a combined canonical and ... More
Entanglement and measurement-induced nonlocality of mixed maximally entangled states in multipartite dynamicsJun 23 2015Jun 12 2016The maximally entangled state can be in a mixed state as well as the well-known pure state. Taking the negativity as a measure of entanglement, we study the entanglement dynamics of bipartite, mixed maximally entangled states (MMESs) in multipartite cavity-reservoir ... More
A Holographic Model of Heavy-light MesonsJun 12 2013We construct a holographic model of heavy-light mesons by extending the AdS/QCD to incorporate the behavior of the heavy quark limit. In that limit, the QCD dynamics is governed by the light quark and the heavy quark simply plays the role of a static ... More
Image Restoration using Group Sparse Representation via Weighted Nuclear Norm MinimizationAug 16 2016As the matrix formed by nonlocal similar patches in a natural image is of a low rank, the nuclear norm minimization (NNM) has been widely studied for image processing. Since the singular values have clear meanings and should be treated differently, NNM ... More
Epidemic spreading on heterogeneous networks with identical infectivitySep 17 2006In this paper, we propose a modified susceptible-infected-recovered (SIR) model, in which each node is assigned with an identical capability of active contacts, $A$, at each time step. In contrast to the previous studies, we find that on scale-free networks, ... More
Gelfand-Kirillov dimensions of the $Z^2$-graded oscillator representations of sl(n)Jan 20 2015Nov 18 2015We find an exact formula of Gelfand-Kirillov dimensions for the infinite-dimensional explicit irreducible sl(n, F)-modules that appeared in the Z^2-graded oscillator generalizations of the classical theorem on harmonic polynomials established by Luo and ... More
A characterization of the unitary highest weight modules by Euclidean Jordan algebrasMar 29 2012Nov 28 2012Let $\mathfrak{co}(J)$ be the conformal algebra of a simple Euclidean Jordan algebra $J$. We show that a (non-trivial) unitary highest weight $\mathfrak{co}(J)$-module has the smallest positive Gelfand-Kirillov dimension if and only if a certain quadratic ... More
A Unified Algebraic Approach to Classical Yang-Baxter EquationJul 28 2007In this paper, the different operator forms of classical Yang-Baxter equation are given in the tensor expression through a unified algebraic method. It is closely related to left-symmetric algebras which play an important role in many fields in mathematics ... More
Splitting and successively solving augmented Lagrangian method for optimization with semicontinuous variables and cardinality constraintJun 15 2015We propose a new splitting and successively solving augmented Lagrangian (SSAL) method for solving an optimization problem with both semicontinuous variables and a cardinality constraint. This optimization problem arises in several contexts such as the ... More
SU(3) Family Gauge Symmetry and the AxionDec 28 2006Jan 24 2007We analyze the structure of a recently proposed effective field theory (EFT) for the generation of quark and lepton mass ratios and mixing angles, based on the spontaneous breaking of an SU(3) family gauge symmetry at a high scale F. We classify the Yukawa ... More
A Large Sample of Am Candidates from LAMOST Data Release 1Jan 26 2015We present a sample of metallic-line star (Am) candidates from the Large sky Area Multi-Object fiber Spectroscopic Telescope Data Release one (LAMOST DR1). According to the characteristic of under-abundance of calcium and overabundance of iron element ... More
Beauty-full TetraquarksNov 30 2016In this article we present a calculation of the $bb\bar{b}\bar{b}$ tetraquark ground-state energy using a diffusion Monte Carlo method to solve the non-relativistic many-body system. The static potential for the four quark system is chosen to align with ... More
Pulling Out All the Stops: Searching for RPV SUSY with Stop-JetsSep 25 2013If the lighter stop eigenstate decays directly to two jets via baryonic R-parity violation, it could have escaped existing LHC and Tevatron searches in four-jet events, even for masses as small as 100 GeV. In order to recover sensitivity in the face of ... More
Measuring the Invisible Higgs Width at the 7 and 8 TeV LHCDec 19 2011Aug 21 2012The LHC is well on track toward the discovery or exclusion of a light Standard Model (SM)-like Higgs boson. Such a Higgs has a very small SM width and can easily have large branching fractions to physics beyond the SM, making Higgs decays an excellent ... More
Inelastic Dark Matter at the LHCSep 19 2011We perform a model-independent study of inelastic dark matter at the LHC, concentrating on the parameter space with the mass splitting between the excited and ground states of dark matter above a few hundred MeV, where the direct detection experiments ... More
Dichromatic Dark MatterDec 04 2012Both the robust INTEGRAL 511 keV gamma-ray line and the recent tentative hint of the 135 GeV gamma-ray line from Fermi-LAT have similar signal morphologies, and may be produced from the same dark matter annihilation. Motivated by this observation, we ... More
Searches with Mono-LeptonsAug 21 2012Jun 19 2013We explore the implications of the mono-lepton plus missing transverse energy signature at the LHC, and point out its significance on understanding how dark matter interacts with quarks, where the signature arises from dark matter pair production together ... More
Cosmological Constraints on the Gravitational Interactions of Matter and Dark MatterMay 18 2015Although there is overwhelming evidence of dark matter from its gravitational interaction, we still do not know its precise gravitational interaction strength or whether it obeys the equivalence principle. Using the latest available cosmological data ... More
Rotation of easy axis in training effect and recovery of exchange bias in ferromagnet/antiferromagnet bilayersOct 13 2007For ferromagnet/antiferromagnet bilayers, rotation of the easy axis has been \textit{for the first time} observed during measurements of training effect and the recovery of exchange bias using FeNi/FeMn system. These salient phenomena strongly suggest ... More
Monolithic photonic integration of suspended light emitting diode, waveguide and photodetectorDec 07 2015We report here a monolithic photonic integration of light emitting diode (LED) with waveguide and photodetector to build a highly-integrated photonic system to perform functionalities on the GaN-on-silicon platform. Suspended p-n junction InGaN/GaN multiple ... More
Giant Linear Magneto-resistance in Nonmagnetic PtBi2Jun 09 2016We synthesized nonmagnetic PtBi$_2$ single crystals and observed a giant linear magneto-resistance (MR) up to 684\% under a magnetic field $\mu_0H$ = 15 T at $T$ = 2 K. The linear MR decreases with increasing temperature, but it is still as large as 61\% ... More
Giant negative thermal expansion covering room temperature in nanocrystalline GaNxMn3Aug 05 2015Materials with negative thermal expansion (NTE), which contract upon heating, are of great interest both technically and fundamentally. Here, we report giant NTE covering room temperature in mechanically milled antiperovksite GaNxMn3 compounds. The micrograin ... More
The Tevatron at the Frontier of Dark Matter Direct DetectionMay 20 2010Dec 24 2010Direct detection of dark matter (DM) requires an interaction of dark matter particles with nucleons. The same interaction can lead to dark matter pair production at a hadron collider, and with the addition of initial state radiation this may lead to mono-jet ... More
The PAMELA excess from neutralino annihilation in the NMSSMMay 18 2009Sep 04 2009We examine whether the cosmic ray positron excess observed by PAMELA can be explained by neutralino annihilation in the Next-to-Minimal Supersymmetric Standard Model (NMSSM). The main dark matter annihilation products are the lightest CP-even scalar h1 ... More
Neutrinos and SU(3) Family Gauge SymmetryJul 14 2006Oct 09 2006We include the standard-model (SM) leptons in a recently proposed framework for the generation of quark mass ratios and Cabibbo-Kobayashi-Maskawa (CKM) mixing angles from an SU(3) family gauge interaction. The set of SM-singlet scalar fields describing ... More
The Planck Scale from Top CondensationSep 10 2008Mar 02 2010We propose a scenario in which the Planck scale is dynamically linked to the electroweak scale induced by top condensation. The standard model field content, without the Higgs, is promoted to a 5D warped background. There is also an additional 5D fermion ... More
Higgs boson from the meta-stable SUSY breaking sectorMay 31 2007Sep 11 2007We construct a calculable model of electroweak symmetry breaking in which the Higgs doublet emerges from the meta-stable SUSY breaking sector as a pseudo Nambu-Goldstone boson. The Higgs boson mass is further protected by the little Higgs mechanism, and ... More
$J_{E_T}^{\rm II}$: A Two-prong Jet Finding AlgorithmSep 24 2015We propose a new global jet-finding algorithm for reconstructing two-prong objects like hadronic weak gauge bosons at a hadron collider. The selection of particles in a two-prong jet is required to maximize a $J_{E_T}^{\rm II}$ function, which contains ... More
Dark Matter Searches with a Mono-Z' jetApr 06 2015Jul 24 2015We study collider signatures of a class of dark matter models with a GeV-scale dark Z'. At hadron colliders, the production of dark matter particles naturally leads to associated production of the Z', which can appear as a narrow jet after it decays hadronically. ... More
Ultraslow Optical Solitons and Their Storage and Retrieval in an Ultracold Ladder-Type Atomic SystemMay 22 2014We propose a scheme to obtain stable nonlinear optical pulses and realize their storage and retrieval in an ultracold ladder-type three-level atomic gas via electromagnetically induced transparency. Based on Maxwell-Bloch equations we derive a nonlinear ... More
The Improvement of Joule Balance NIM-1 and the Design of New Joule Balance NIM-2Dec 22 2014The development of the joule balance method to measure the Planck constant, in support of the redefinition of the kilogram, has been going on at the National Institute of Metrology of China (NIM) since 2007. The first prototype has been built to check ... More
J_{E_T}: A Global Jet Finding AlgorithmNov 13 2014We introduce a new jet-finding algorithm for a hadron collider based on maximizing a J_{E_T} function for all possible combinations of particles in an event. This function prefers a larger value of the jet transverse energy and a smaller value of the ... More
Color-octet Companions of a 750 GeV Heavy PionApr 26 2016Color octet bosons are a universal prediction of models in which the 750 GeV diphoton resonance corresponds to a pion of a QCD-like composite sector. We show that the existing searches for dijet and photon plus jet resonances at the LHC constrain single ... More
A 750 GeV Dark Pion: Cousin of a Dark G-parity-odd WIMPDec 17 2015Dec 25 2015We point out a potential common origin of the recently observed 750 GeV diphoton resonance and a Weakly Interacting Massive Particle (WIMP) candidate. In a dark QCD sector with an unbroken dark G-parity, the diphoton resonance could be a dark G-even pion, ... More
Constrained Flavor BreakingMar 25 2015May 01 2015We explore predictive flavor models based on subgroups of the standard-model $SU(3)^5$ flavor symmetry. Restricting to products of $SU(3)$, we find that a global $SU(3)^3$ flavor symmetry, broken only by two Yukawa spurions, leads to a relation among ... More
Hiding a Heavy Higgs Boson at the 7 TeV LHCDec 08 2011A heavy Standard Model Higgs boson is not only disfavored by electroweak precision observables but is also excluded by direct searches at the 7 TeV LHC for a wide range of masses. Here, we examine scenarios where a heavy Higgs boson can be made consistent ... More
Direct measurement of giant electrocaloric effect in BaTiO3 multilayer thick film structure beyond theoretical predictionMar 26 2010The electrocaloric effect of BaTiO3 multilayer thick film structure was investigated by direct measurement and theoretical calculation. The samples were prepared by the tape-casting method, which had 180 dielectric layers with an average thickness of ... More
Breaking Discrete Symmetries in Broken Gauge TheoriesJun 14 2005Jul 08 2005We study the spontaneous breaking of discrete symmetries in theories with broken gauge symmetry. The intended application is to CP breaking in theories with gauged flavor symmetries, but the analysis described here is preliminary. We dispense with matter ... More
Topological Interactions in Warped Extra DimensionsNov 09 2009Feb 18 2010Topological interactions will be generated in theories with compact extra dimensions where fermionic chiral zero modes have different localizations. This is the case in many warped extra dimension models where the right-handed top quark is typically localized ... More
Function Photonic CrystalsOct 30 2010Dec 01 2012In the paper, we present a new kind of function photonic crystals, which refractive index is a function of space position. Unlike conventional PCs, which structure grow from two materials, A and B, with different dielectric constants $\epsilon_{A}$ and ... More
Random number generation with cosmic photonsNov 22 2016Random numbers are used in a broad spectrum of scientific researches and industrial applications ranging from physics foundation tests to information encryption. In particular, nonlocality tests provide a strong evidence to our current understanding of ... More
The Amplituhedron from Momentum Twistor DiagramsAug 11 2014We propose a new diagrammatic formulation of the all-loop scattering amplitudes/Wilson loops in planar N=4 SYM, dubbed the "momentum-twistor diagrams". These are on-shell-diagrams obtained by gluing trivalent black and white vertices defined in momentum ... More
On the existence and uniqueness of solutions to stochastic differential equations driven by G-Brownian motion with integral-Lipschitz coefficientsFeb 04 2010Oct 06 2015In this paper, we study the existence and uniqueness of solutions to stochastic differential equations driven by G-Brownian motion (GSDEs) with integral-Lipschitz conditions on their coefficients.
To be or not to be? Magnetic monopoles in non-abelian gauge theoriesJul 22 2004Aug 05 2004Magnetic monopoles form an inspiring chapter of theoretical physics, covering a variety of surprising subjects. We review their role in non-abelian gauge theories. An expose of quite exquisite physics derived from a hypothetical particle species, because ... More