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Center vortex model and the G(2) gauge group
QCD phenomenological model center vortex confinement
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2011/1/14
The thick center vortex model is applied to G(2) gauge group to obtain the potentials between static sources of the fundamental and adjoint representations.
Conductance through quantum wires with Levy-type disorder: universal statistics in anomalous quantum transport
Conductance through quantum wires Levy-type disorder anomalous quantum transport
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2010/11/23
Random processes characterized by density probabilities with a long tail–L´evy-type
processes– have been found in very different phenomena and fields such as biology, economy, and physics.
Commensurability effects in one-dimensional Anderson localization: anomalies in eigenfunction statistics
Commensurability effects eigenfunction statistics
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2010/11/18
The one-dimensional (1d) Anderson model (AM), i.e. a tight-binding chain with uncorrelated Gaussian disorder in the on-site energies, has statistical anomalies at any rational point f = 2a E , where ...
A conformal invariant growth model
conformal invariant growth model
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2011/1/14
We present a one-parameter extension of the raise and peel one-dimensional growth model. The model is defined in the configuration space of Dyck (RSOS) paths. Tiles from a rarefied gas hit the interfa...
Fast Converging Path Integrals for Time-Dependent Potentials II: Generalization to Many-body Systems and Real-Time Formalism
Time-dependent potential Effective action Many-body system Imaginary time Real time
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2010/11/25
Based on a previously developed recursive approach for calculating the short-time expansion of the propagator for systems with time-independent potentials and its time-dependent generalization for sim...
Out of equilibrium statistical ensemble inequivalence
equilibrium statistical ensemble inequivalence
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2010/11/22
A modified version of the Hamiltonian Mean Field model is considered, by including the effect
of an externally imposed magnetic field. This latter is shown to significantly alter the system
behaviou...
The Impact of Competing Time Delays in Coupled Stochastic Systems
Stochastic synchronization and coordination Time delays Scaling
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2010/11/22
We study the impact of competing time delays in coupled stochastic syn-chronization and coordination problems. We consider two types of delays:transmission delays between interacting elements and proc...
Méthodes quasi-statiques pour la simulation numérique discrète des assemblages granulaires
Méthodes quasi-statiques simulation numérique discrète assemblages granulaires
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2010/11/19
Le présent document constitue le chapitre 3 du traitéModélisation numérique discrète des matériaux granulaires, ouvrage collectif, sous la direction de Farhang Radjaï et Frédéric
Dubois, publié ...
Investigating metastable hcp solid helium below its melting pressure
quantum solids hcp solid helium metastability vacancy
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2010/11/19
We report a first attempt to produce metastable hcp solid helium below its melting pressure. A focused sound pulse is emitted along the c-axis of a monodomain hcp helium-4 crystal starting from a stat...
The cosmological backreaction: gauge (in)dependence, observers and scalars
Tcosmological backreaction gauge (in)dependence observers and scalars
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2010/12/20
We discuss several issues related to a recent proposal for defining classical spatial averages
to be used in the so-called cosmological backreaction problem. In the large averaging-volume limit all g...
Study of the scaling properties in SU(2) gauge theory with eight flavors
Study scaling properties SU(2) gauge theory eight flavors
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2011/1/13
We present our preliminary study of the SU(2) gauge theory with 8 flavors of fermions in fundamental representation.
Statistical mechanical analysis of hierarchical random code ensemble in signal processing
Statistical mechanical analysis hierarchical random code ensemble signal processing
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2010/11/23
We study a random code ensemble with a hierarchical structure, which is closely related to generalized random energy model with discrete energy values.Based on this correspondence, we analyze this ens...
Evolution of cosmological perturbations in an RG-driven inflationary scenario
Evolution of cosmological perturbations RG-driven inflationary scenario
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2010/12/20
A gauge-invariant, linear cosmological perturbation theory of an almost homogeneous and isotropic universe with dynamically evolving Newton constant G and cosmological constant
is presented.
Strangeness and Chiral Symmetry Breaking
Strangeness Chiral Symmetry Breaking
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2011/1/7
The implications of chiral symmetry breaking and SU(3) symmetry breaking have been studied in the chiral constituent quark model ( CQM). The role of hidden strangeness component has been investigated ...
Environmental effects on the $x^{4}$ model in Tsallis statistics
Non-extensive statistics Squeezing x4 model
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2010/11/17
The author studied the effects of the environment described by Tsallis statistics in quantum
mechanics, when the deviation from Boltzmann-Gibbs (BG) statistics is small. The x4 model was used and the...