Results for "Marcos K. Aguilera"

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Yesquel: scalable SQL storage for Web applicationsNov 08 2014Based on a brief history of the storage systems for Web applications, we motivate the need for a new storage system. We then describe the architecture of such a system, called Yesquel. Yesquel supports the SQL query language and offers performance similar ... More
The Impact of RDMA on AgreementMay 29 2019Remote Direct Memory Access (RDMA) is becoming widely available in data centers. This technology allows a process to directly read and write the memory of a remote host, with a mechanism to control access permissions. In this paper, we study the fundamental ... More
Hillview: A trillion-cell spreadsheet for big dataJul 10 2019Hillview is a distributed spreadsheet for browsing very large datasets that cannot be handled by a single machine. As a spreadsheet, Hillview provides a high degree of interactivity that permits data analysts to explore information quickly along many ... More
Rhythms of the collective brain: Metastable synchronization and cross-scale interactions in connected multitudesNov 21 2016Collective social events operate at many levels of organization -- from individuals to crowds -- presenting a variety of temporal and spatial scales of activity, whose causal interactions challenge our understanding of social systems. Large data sets ... More
Rhythms of the collective brain: Metastable synchronization and cross-scale interactions in connected multitudesNov 21 2016Jan 17 2018Crowd behaviour challenges our fundamental understanding of social phenomena. Involving complex interactions between multiple temporal and spatial scales of activity, its governing mechanisms defy conventional analysis. Using 1.5 million Twitter messages ... More
On dilatation factors of braids on three strandsJul 26 2013In this work we present a natural surjective map from rigid braids in B_3 (in Garside sense) to SL_2(N). This map provides an upper and a lower bound for the dilatation factor of a pseudo-Anosov 3-strand braid. These bounds only depend on the canonical ... More
On Lithium-Rich Red Giants. II. Engulfment on the Giant Branch of Trumpler 20Sep 23 2016The Gaia-ESO survey recently reported on a large sample of lithium (Li) abundance determinations for evolved stars in the rich open cluster Trumpler 20. They argue for a scenario where virtually all stars experience post main sequence mixing and Li is ... More
Storm: a fast transactional dataplane for remote data structuresFeb 06 2019RDMA is an exciting technology that enables a host to access the memory of a remote host without involving the remote CPU. Prior work shows how to use RDMA to improve the performance of distributed in-memory storage systems. However, RDMA is widely believed ... More
On Lithium-Rich Red Giants. II. Engulfment on the Giant Branch of Trumpler 20Sep 23 2016Dec 01 2016The Gaia-ESO survey recently reported on a large sample of lithium (Li) abundance determinations for evolved stars in the rich open cluster Trumpler 20. They argue for a scenario where virtually all stars experience post main sequence mixing and Li is ... More
A Spatially Extended Model for Residential SegregationJul 14 2006Aug 16 2006In this paper we analyze urban spatial segregation phenomenon in terms of the income distribution over a population, and inflationary parameter weighting the evolution of housing prices. For this, we develop a discrete, spatially extended model based ... More
Determined Admissible SetsJul 01 2019It is shown that if there are $\omega^2$ Woodin cardinals below a measurable cardinal, then there is a transitive model of KP + AD$_\mathbb{R}$ containing all reals.
Long Borel GamesJun 27 2019It is shown that Borel games of length $\omega^2$ are determined if, and only if, for every countable ordinal $\alpha$, there is a fine-structural, countably iterable extender model of Zermelo set theory with $\alpha$-many iterated powersets above a limit ... More
The Order of ReflectionJun 27 2019Extending Aanderaa's classical result that $\pi^1_1<\sigma^1_1$, we determine the order between any two patterns of iterated $\Sigma^1_1$- and $\Pi^1_1$-reflection. We show that this \emph{linear reflection order} is a prewellordering of length $\omega^\omega$. ... More
Bulk Band Structure of Bi$_2$Te$_3$Mar 12 2014The bulk band structure of Bi$_2$Te$_3$ has been determined by angle-resolved photoemission spectroscopy and compared to first-principles calculations. We have performed calculations using the local density approximation (LDA) of density functional theory ... More
Topological Completeness of the Transfinite Provability LogicSep 10 2016Let $\Lambda$ be an ordinal. The polymodal provability logic GLP$_\Lambda$ contains modalities $\langle\lambda\rangle$ for $\lambda < \Lambda$ intended to capture progressively stronger notions of consistency in mathematical theories. We show GLP$_\Lambda$ ... More
On convex functions and the finite element methodApr 10 2008Many problems of theoretical and practical interest involve finding a convex or concave function. For instance, optimization problems such as finding the projection on the convex functions in $H^k(\Omega)$, or some problems in economics. In the continuous ... More
$F_σ$ Games and Reflection in $L(\mathbb{R})$Jun 27 2019It is shown that determinacy of $F_\sigma$ games of length $\omega^2$ is equivalent to the existence of a transitive model of KP + AD which contains the reals and reflects $\Pi_1$ facts about the next admissible set.
Neutral color-spin locking phase in neutron starsNov 09 2006We present results for the spin-1 color-spin locking phase (CSL) using a NJL-type model in two flavor quark matter for compact stars applications. The CSL condensate is flavor symmetric and therefore charge and color neutrality can easily be satisfied. ... More
A Topological Completeness Theorem for Transfinite Provability LogicSep 10 2016May 06 2019We prove a topological completeness theorem for the modal logic GLP containing operators $\langle\lambda\rangle$ for $\lambda \in$ Ord intended to capture progressively stronger notions of consistency in mathematical theories. We show that, given a scattered ... More
Unsound Inferences Make Proofs ShorterAug 27 2016We give examples of calculi that extend Gentzen's sequent calculus LK by unsound quantifier inferences in such a way that (i) derivations lead only to true sequents, and (ii) proofs therein are non-elementarily shorter than LK-proofs.
Adaptation to criticality through organizational invariance in embodied agentsDec 13 2017Many biological and cognitive systems do not operate deep within one or other regime of activity. Instead, they are poised at critical points located at transitions of their parameter space. The pervasiveness of criticality suggests that there may be ... More
Limit points of the branch locus of $\mathcal{M}_g$Mar 21 2017Let $\mathcal{M}_{g}$ be the moduli space of compact connected hyperbolic surfaces of genus $g\geq2$, and ${\mathcal B}_g \subset {\mathcal M}_{g} $ its branch locus. Let $\widehat{{\mathcal{M}}_{g}}$ be the Deligne-Mumford compactification of the moduli ... More
On the order of an automorphism of a smooth hypersurfaceFeb 16 2011Apr 23 2012In this paper we give an effective criterion as to when a positive integer q is the order of an automorphism of a smooth hypersurface of dimension n and degree d, for every d>2, n>1, (n,d)\neq (2,4), and \gcd(q,d)=\gcd(q,d-1)=1. This allows us to give ... More
Current-phase relation of ballistic graphene Josephson junctionsDec 20 2016Dec 23 2016The current-phase relation (CPR) of a Josephson junction (JJ) determines how the supercurrent evolves with the superconducting phase difference across the junction. Knowledge of the CPR is essential in order to understand the response of a JJ to various ... More
Inferring neutron stars crust properties from quiescent thermal emissionMay 20 2015The observation of thermal emission from isolated neutron stars and the modeling of the corresponding cooling curves has been very useful to get information on the properties of matter at very high densities. More recently, the detection of quiescent ... More
Integrated Information and Autonomy in the Thermodynamic LimitApr 02 2018Feb 05 2019The concept of autonomy is fundamental for understanding biological organization and the evolutionary transitions of living systems. Understanding how a system constitutes itself as an individual, cohesive, self-organized entity is a fundamental challenge ... More
The consistency strength of long projective determinacyJun 27 2019We determine the consistency strength of determinacy for projective games of length $\omega^2$. Our main theorem is that $\boldsymbol\Pi^1_{n+1}$-determinacy for games of length $\omega^2$ implies the existence of a model of set theory with $\omega + ... More
Learning Criticality in an Embodied Boltzmann MachineFeb 02 2017Many biological and cognitive systems do not operate deep into one or other regime of activity. Instead, they exploit critical surfaces poised at transitions in their parameter space. The pervasiveness of criticality in natural systems suggests that there ... More
Criticality as It Could Be: organizational invariance as self-organized criticality in embodied agentsApr 18 2017May 24 2017This paper outlines a methodological approach for designing adaptive agents driving themselves near points of criticality. Using a synthetic approach we construct a conceptual model that, instead of specifying mechanistic requirements to generate criticality, ... More
Integrated information in the thermodynamic limitJun 20 2018Jul 04 2018The capacity to integrate information is a prominent feature of biological and cognitive systems. Integrated Information Theory (IIT) provides a mathematical approach to quantify the level of integration in a system, yet its computational cost generally ... More
Approximating optimization problems over convex functionsApr 10 2008Many problems of theoretical and practical interest involve finding an optimum over a family of convex functions. For instance, finding the projection on the convex functions in $H^k(\Omega)$, and optimizing functionals arising from some problems in economics. ... More
Adaptation to criticality through organizational invariance in embodied agentsDec 13 2017Jun 01 2018Many biological and cognitive systems do not operate deep within one or other regime of activity. Instead, they are poised at critical points located at phase transitions in their parameter space. The pervasiveness of criticality suggests that there may ... More
Automorphisms of prime order of smooth cubic n-foldsFeb 22 2010Sep 09 2010In this paper we give an effective criterion as to when a prime number p is the order of an automorphism of a smooth cubic hypersurface of P^{n+1}, for a fixed n > 1. We also provide a computational method to classify all such hypersurfaces that admit ... More
Projective Games on the RealsJul 08 2019We compute the sets of reals that are $\Sigma_1$-definable over the model $M_n(\mathbb{R})$. As consequences of the proof, we show that projective games on reals are determined if and only if $M_n^\sharp(\mathbb{R})$ exists for all $n\in\mathbb{N}$ and ... More
The cathode tube effect: heavy quarks probing the Glasma in p-Pb collisionsMay 24 2018Jun 22 2018We study the propagation of charm quarks in the early stage of high energy proton-lead collision, considering the interaction of these quarks with the evolving Glasma by means of the Wong equations. Neglecting quantum fluctuations at the initial time ... More
The patch topology and the ultrafilter topology on the prime spectrum of a commutative ringJul 10 2007Oct 14 2007Let R be a commutative ring and let Spec(R) denote the collection of prime ideals of R. We define a topology on Spec(R) by using ultrafilters and demonstrate that this topology is identical to the well known patch or constructible topology. The proof ... More
A generalization of Kronecker function rings and Nagata ringsApr 03 2006Despite the obvious similarities in definitions and properties, the Nagata ring and the Kronecker function ring have been classically treated independently, when the coefficients are not in a Pr\"ufer domain. The purpose of this paper is to study two ... More
Cancellation properties in ideal systems: A classification of $\boldsymbol{e.a.b.}$ semistar operationsMay 02 2009We give a classification of {\texttt{e.a.b.}} semistar (and star) operations by defining four different (successively smaller) distinguished classes. Then, using a standard notion of equivalence of semistar (and star) operations to partition the collection ... More
Glassy dynamics in asymmetric binary mixtures of hard-spheresJul 25 2018The binary hard-sphere mixture is one of the simplest representations of a many-body system with competing time and length scales. This model is relevant to fundamentally understand both the structural and dynamical properties of materials, such as metallic ... More
Nagata Rings, Kronecker Function Rings and Related Semistar OperationsFeb 13 2003In 1994, Matsuda and Okabe introduced the notion of semistar operation. This concept extends the classical concept of star operation (cf. for instance, Gilmer's book \cite{G}) and, hence, the related classical theory of ideal systems based on the works ... More
Are Mobility Management Solutions Ready for 5G?Feb 07 2019Enabling users to move to different geographical locations within a network and still be able to maintain their connectivity and most essentially, continuity of service, is what makes any wireless network ubiquitous. Whilst challenging, modern day wireless ... More
Hybrid stars with color superconductivity within a nonlocal chiral quark modelMar 23 2003Mar 07 2004The equation of state for quark matter is derived for a nonlocal, chiral quark model within the mean field approximation. Special emphasis is on the occurrence of a diquark condensate which signals a phase transition to color superconductivity and its ... More
Theory for the reduction of products of spin operatorsMay 30 2000In this study we show that the sum of the powers of arbitrary products of quantum spin operators such as $(S^+)^l(S^-)^m(S^z)^n$ can be reduced by one unit, if this sum is equal to 2S+1, S being the spin quantum number. We emphasize that by a repeated ... More
Nonlocality effects on spin-one pairing patterns in two-flavor color superconducting quark matter and compact stars applicationsNov 30 2005Aug 02 2006We study the influence of nonlocality in the interaction on two spin one pairing patterns of two-flavor quark matter: the anisotropic blue color paring besides the usual two color superconducting matter (2SCb), in which red and green colors are paired, ... More
Strong Completeness of Provability Logic for Ordinal SpacesNov 18 2015Abashidze and Blass independently proved that the modal logic $\sf{GL}$ is complete for its topological interpretation over any ordinal greater than or equal to $\omega^\omega$ equipped with the interval topology. Icard later introduced a family of topologies ... More
Energy release due to antineutrino untrapping and diquark condensation in hot quark star evolutionDec 10 2002Nov 04 2003We study the consequences of antineutrino trapping in hot quark matter for quark star configurations with possible diquark condensation. Due to the conditions of charge neutrality and beta-equilibrium the flavor asymmetry increases with the number density ... More
How robust is a 2SC quark matter phase under compact star constraints?Dec 20 2004Mar 22 2005We study the phase structure and equation of state for two-flavor quark matter at low temperature under compact star constraints within a nonlocal chiral quark model. We find that the occurence of a two-flavor color superconducting (2SC) phase is sensitive ... More
Collinear versus non-collinear magnetic order in Pd atomic clusters: ab-initio calculationsJun 20 2007We present a thorough theoretical assessment of the stability of non-collinear spin arrangements in small palladium clusters. We generally find that ferromagnetic order is always preferred, but that antiferromagnetic and non-collinear configurations of ... More
Energy release due to antineutrino untrapping from hot quark starsFeb 03 2004An equation of state for 2-flavor quark matter (QM) with diquark condensation under the conditions for compact stars -$\beta$-equilibrium, charge and color neutrality- is presented. Trapped antineutrinos prevent the formation of the diquark condensate ... More
Electronic phase transitions of bismuth under strain from relativistic self-consistent GW calculationsMar 13 2015Mar 26 2015We present quasiparticle self-consistent GW (QSGW) calculations of semimetallic bulk Bi. We go beyond the conventional QSGW method by including the spin-orbit coupling throughout the self-consistency cycle. This approach improves the description of the ... More
On convex regression estimatorsJun 14 2010A new nonparametric estimator of a convex regression function in any dimension is proposed and its convergence properties are studied. We start by using any estimator of the regression function and we \emph{convexify} it by taking the convex envelope ... More
Collinear versus non-collinear magnetic order in Pd atomic clustersMay 10 2006We present a thorough theoretical assessment of the stability of non-collinear spin arrangements in small palladium clusters. We generally find that ferromagnetic order is always preferred, but that antiferromagnetic and non-collinear configurations of ... More
Alpha Decay of Superheavy NucleiFeb 14 2011Recently synthesis of superheavy nuclei has been achieved in hot fusion reactions. A systematic theoretical calculation of alpha decay half-lives in this region of the periodic system, may be useful in the identification of new nuclei in these type of ... More
Lithium abundance patterns of late-F stars: an in-depth analysis of the lithium desertMar 15 2018We address the existence and origin of the lithium (Li) desert, a region in the Li - T_eff plane sparsely populated by stars. Here we analyze some of the explanations that have been suggested for this region, including mixing in the late main sequence, ... More
Mobility Management as a Service for 5G NetworksMay 25 2017Mobility Management (MM) techniques have conventionally been centralized in nature, wherein a single network entity has been responsible for handling the mobility related tasks of the mobile nodes attached to the network. However, an exponential growth ... More
The constructible topology on spaces of valuation domainsJun 15 2012We consider properties and applications of a compact, Hausdorff topology called the "ultrafilter topology" defined on an {\sl arbitrary spectral space} and we observe that this topology coincides with the constructible topology. If $K$ is a field and ... More
Non-inner automorphisms of order p in finite p-groups of coclass 3Apr 27 2016In this paper we study the existence of at least one non-inner automorphism of order p of a non-abelian finite p-group of coclass 3, where p is a prime integer such that p is different from 3.
Nuclear effects in the F3 structure functionApr 28 1998By using a relativistic framework and accurate nuclear spectral functions we evaluate the ratio F_{3A}/AF_{3N} of deep inelastic neutrino scattering. Parametrizations of this ratio for different values of Q^2 are provided. These results should be useful ... More
Quantifying the probable approximation error of probabilistic inference programsMay 31 2016This paper introduces a new technique for quantifying the approximation error of a broad class of probabilistic inference programs, including ones based on both variational and Monte Carlo approaches. The key idea is to derive a subjective bound on the ... More
Singularities on the brane aren't isotropicJul 20 2002Recent studies of homogeneous anisotropic universe models in the brane world scenario show that the cosmological singularity in this context is isotropic. It has therefore been suggested that this may be a generic feature of singularities on the brane, ... More
Natural and fishing mortalities affecting eastern sea garfish, Hyporhamphus australis, inferred from age-frequency data using hazard functionsJan 24 2017Jan 26 2017Estimates of age-specific natural (M) and fishing (F) mortalities among economically important stocks are required to determine sustainable yields and, ultimately, facilitate effective resource management. Here we used hazard functions to estimate mortality ... More
Galaxy Evolution tool: Construction and ApplicationsMay 15 2002We present a dual-infall galactic chemical evolution model which uses a new set of stellar yields calculated by Limongi et al (2001) to constrain the amount of iron-peak elements ejected by massive stars. The age-metallicity relation, G-dwarf distribution ... More
Measuring the non-asymptotic convergence of sequential Monte Carlo samplers using probabilistic programmingDec 07 2016A key limitation of sampling algorithms for approximate inference is that it is difficult to quantify their approximation error. Widely used sampling schemes, such as sequential importance sampling with resampling and Metropolis-Hastings, produce output ... More
A Graphical Approach to a Model of Neuronal Tree with Variable DiameterDec 31 2010We propose a simple graphical approach to steady state solutions of the cable equation for a general model of dendritic tree with tapering. A simple case of transient solutions is also briefly discussed.
Cancellation properties in ideal systems: an $\boldsymbol{e.a.b.}$ not $\boldsymbol{a.b.}$ star operationFeb 11 2010Feb 21 2010We show that Krull's \texttt{a.b.} cancellation condition is a properly stronger condition than Gilmer's \texttt{e.a.b.} cancellation condition for star operations.
Comparing the performance of LDA and GGA functionals in predicting the lattice thermal conductivity of semiconductor materials: the case of AlAsNov 15 2018In this contribution we assess the performance of two different exchange-correlation functionals in the first-principle prediction of the lattice thermal conductivity of bulk semiconductors, namely the local density approximation (LDA) and the Perdew-Burke-Ernzerhof ... More
Unveiling the photophysics of thiourea from CASPT2/CASSCF potential energy surfaces and singlet/triplet excited state molecular dynamics simulationsJan 22 2019Feb 01 2019This work describes the decay mechanism of photoexcited thiourea, both in gas phase and in solution, from the information inferred from the topography of the excited and ground state potential energy surfaces and mixed singlet/triplet quantum classical ... More
Strings in AdS_4 x CP^3, Wilson loops in N=6 super Chern-Simons-matter and Bremsstrahlung functionsMay 06 2014May 08 2014We find 1/6 BPS string configurations in AdS_4 x CP^3, which we identify as the duals of certain 1/6 BPS circular Wilson loops in N=6 super Chern-Simons-matter gauge theory. We use our results to verify -in the strong coupling limit- a proposal made in ... More
Exploring jet-launching conditions for SFXTsApr 29 2014In the magneto-centrifugal mechanism for jet formation, accreting neutron stars are assumed to produce relativistic jets only if their surface magnetic field is weak enough ($B \sim 10^8$ G). However, the most common manifestation of neutron stars are ... More
Circular Wilson loops in defect Conformal Field TheoryDec 23 2016Feb 15 2017We study a D3-D5 system dual to a conformal field theory with a codimension-one defect that separates regions where the ranks of the gauge groups differ by $k$. With the help of this additional parameter, as observed by Nagasaki, Tanida and Yamaguchi, ... More
Quiescent thermal emission from neutron stars in LMXBsSep 16 2013Feb 19 2015We monitored the quiescent thermal emission from neutron stars in low-mass X-ray binaries after active periods of intense activity in x-rays (outbursts). The theoretical modeling of the thermal relaxation of the neutron star crust may be used to establish ... More
Two dimensional non-Fermi liquid metals: a solvable large N limitMay 20 2019Significant effort has been devoted to the study of "non-Fermi liquid" (NFL) metals: gapless conducting systems that lack a quasiparticle description. One class of NFL metals involves a finite density of fermions interacting with soft order parameter ... More
DGP Cosmological model with generalized Ricci dark energySep 05 2013Nov 13 2014The braneworld model proposed by Dvali, Gabadadze and Porrati (DGP) leads to an accelerated universe without cosmological constant or other form of dark energy for the positive branch $(\epsilon =+1)$. For the negative branch $(\epsilon =-1)$ we have ... More
Semiclassical partition function for strings dual to Wilson loops with small cusps in ABJMDec 12 2014We compute the 1-loop partition function for strings in $AdS_4\times\mathbb{CP}^3$, whose worldsheets end along a line with small cusp angles in the boundary of AdS. We obtain these 1-loop results in terms of the vacuum energy for on-shell modes. Our ... More
Model Predictive Control for Distributed Microgrid Battery Energy Storage SystemsFeb 15 2017This paper proposes a new convex model predictive control strategy for dynamic optimal power flow between battery energy storage systems distributed in an AC microgrid. The proposed control strategy uses a new problem formulation, based on a linear d-q ... More
Vertex adjacencies in the set covering polyhedronJun 23 2014Oct 09 2017We describe the adjacency of vertices of the (unbounded version of the) set covering polyhedron, in a similar way to the description given by Chvatal for the stable set polytope. We find a sufficient condition for adjacency, and characterize it with similar ... More
Generalized Cooper pairing and Bose-Einstein condensationJun 30 2003A Bethe-Salpeter treatment of Cooper pairs (CPs) based on an ideal Fermi gas (IFG) "sea"' yields the familiar negative-energy, two-particle bound-state if two-hole CPs are ignored, but is meaningless otherwise as it gives purely-imaginary energies. However, ... More
Joule heating in the cooling of magnetized neutron starsOct 25 2007We present 2D simulations of the cooling of neutron stars with strong magnetic fields (B \geq 10^{13} G). We solve the diffusion equation in axial symmetry including the state of the art microphysics that controls the cooling such as slow/fast neutrino ... More
Excited state dynamics of some nonsteroidal anti-inflammatory drugs: a surface-hopping investigationJan 20 2019Feb 14 2019Here we present a computational investigation of the excited state dynamics of 5 different active medical substances (aspirin, ibuprofen, carprofen, suprofen, indomethacin) which belong to the family of nonsteroidal anti-inflammatory drugs (NSAIDs). The ... More
On Lithium-Rich Red Giants. I. Engulfment of Sub-Stellar CompanionsMay 17 2016Jul 20 2016A small fraction of red giants are known to be lithium (Li) rich, in contradiction with expectations from stellar evolutionary theory. A possible explanation for these atypical giants is the engulfment of a Li-rich planet or brown dwarf by the star. In ... More
An Array of Layers in Silicon Sulfides: Chain-like and Ground State StructuresMay 26 2016Jun 09 2016While much is known about isoelectronic materials related to carbon nanostructures, such as boron nitride layers and nanotubes, rather less is known about equivalent silicon based materials. Following the recent discovery of phosphorene, we herein discuss ... More
Chemical Bonding of Transition-metal Co$_{13}$ Clusters with GrapheneDec 24 2015We carried out density functional calculation to study Co$_{13}$ clusters on graphene. We deposit several free isomers in different disposition respect to hexagonal lattice nodes, studying even the $hcp$ $2d$ isomer recently obtained as the most stable ... More
Vertex adjacencies in the set covering polyhedronJun 23 2014Nov 10 2015We describe the adjacency of vertices of the (unbounded version of the) set covering polyhedron, in a similar way to the description given by Chv\'atal for the stable set polytope. We find a sufficient condition for adjacency, and characterize it with ... More
Neutron star long term cooling - Joule heating in magnetized neutron starsMar 04 2008We present two-dimensional simulations for the cooling of neutron stars with strong magnetic fields (B > 1e13 Gauss). We study how the cooling curves are influenced by magnetic field decay. We show that the Joule heating effects are very large and in ... More
Ultralong-range triatomic Rydberg molecules in an electric fieldJan 19 2016We investigate the electronic structure of a triatomic Rydberg molecule formed by a Rydberg atom and two neutral ground-state atoms. Taking into account the $s$-wave and $p$-wave interactions we perform electronic structure calculations and analyze the ... More
Addendum to Vertex adjacencies in the set covering polyhedronOct 06 2017Jan 04 2018We study the relationship between the vertices of an up-monotone polyhedron $R$ and those of the polytope $P$ obtained by truncating $R$ with the unit hypercube. When $R$ has binary vertices, we characterize the vertices of $P$ in terms of the vertices ... More
Spin-enhanced magnetocaloric effect in molecular nanomagnetsJul 18 2005An unusually large magnetocaloric effect for the temperature region below 10 K is found for the Fe14 molecular nanomagnet. This is to large extent caused by its extremely large spin S ground-state combined with an excess of entropy arising from the presence ... More
Color-spin locking phase in two-flavor quark matter for compact star phenomenologyMar 30 2005Apr 18 2005We study a spin-1 single flavor color superconducting phase which results from a color-spin locking (CSL) interaction in two-flavor quark matter. This phase is particularly interesting for compact star cooling applications since the CSL phase may survive ... More
Nonlocality effects on Color Spin Locking condensatesApr 24 2006Nov 22 2006We consider the color spin locking (CSL) phase of two-flavor quark matter at zero temperature for nonlocal instantaneous, separable interactions. We employ a Lorentzian-type form factor allowing a parametric interpolation between the sharp (Nambu-Jona-Lasinio ... More
The impact of magnetic field on the thermal evolution of neutron starsDec 09 2007The impact of strong magnetic fields B>10e13 G on the thermal evolution of neutron stars is investigated, including crustal heating by magnetic field decay. For this purpose, we perform 2D cooling simulations with anisotropic thermal conductivity considering ... More
2D Cooling of Magnetized Neutron StarsOct 03 2007Apr 17 2008Context: Many thermally emitting isolated neutron stars have magnetic fields larger than 10^13 G. A realistic cooling model that includes the presence of high magnetic fields should be reconsidered. Aims: We investigate the effects of anisotropic temperature ... More
Weyl Groups and Abelian VarietiesMar 16 2005Let G be a finite group. For each integral representation $\rho$ of G we consider $\rho-$decomposable principally polarized abelian varieties; that is, principally polarized abelian varieties (X,H) with $\rho(G)-$action, of dimension equal to the degree ... More
SMA line observations of the CH$_3$OH-maser outflow in DR21(OH)Nov 05 2018We present a (sub)millimeter line survey of the methanol maser outflow located in the massive star-forming region DR21(OH) carried out with the Submillimeter Array (SMA) at 217/227 GHz and 337/347 GHz. We find transitions from several molecules towards ... More
On the 0-dimensional irreducible components of the singular locus of $\Cal A_g$Jul 06 2004In this short note we give a characterization of extremal principally polarized abelian varieties determining an isolated point in $Sing \Cal A_g$. The case $g=5$ is treated with detail.
Substitutional 4d and 5d Impurities in GrapheneJun 01 2016We describe the structural and electronic properties of graphene doped with substitutional impurities of 4d and 5d transition metals. The binding energy and distances for 4d and 5d metals in graphene show similar trends for the later groups in the periodic ... More
Tracing the reverberation lag in the hard state of black hole X-ray binariesOct 09 2015We report results obtained from a systematic analysis of X-ray lags in a sample of black hole X-ray binaries, with the aim of assessing the presence of reverberation lags and studying their evolution during outburst. We used XMM-Newton and simultaneous ... More
Classical Liquids in Fractal DimensionMay 05 2015Aug 28 2015We introduce fractal liquids by generalizing classical liquids of integer dimensions $d = 1, 2, 3$ to a fractal dimension $d_f$. The particles composing the liquid are fractal objects and their configuration space is also fractal, with the same non-integer ... More
The Matrix Theory S-MatrixJun 10 1998The technology required for eikonal scattering amplitude calculations in Matrix theory is developed. Using the entire supersymmetric completion of the v^4/r^7 Matrix theory potential we compute the graviton-graviton scattering amplitude and find agreement ... More
Some closure operations in Zariski-Riemann spaces of valuation domains: a surveySep 19 2013In this survey we present several results concerning various topologies that were introduced in recent years on spaces of valuation domains.