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Chiral Symmetry Restoration in Holographic Noncommutative QCD
Chiral Symmetry Holographic Noncommutative QCD
2010/12/23
We consider the noncommutative deformation of the Sakai-Sugimoto model at finite temperature and finite baryon chemical potential. The influence of the space noncommutativity on the flavor dynamics of...
We investigate tensor mesons as quark-antiquark bound states in a fully covariant Bethe-Salpeter equation. As a first concrete step we report results for masses of J^{PC}=2^{++} mesons from the chiral...
Scaling, decoupling and transversality of the gluon propagator
Scaling decoupling the gluon propagator
2011/1/7
In this note we discuss a couple of technical issues relevant to solving the Dyson-Schwinger equation for the gluon propagator in Landau gauge Yang-Mills theory. In the deep infrared functional method...
The phase-shift of isospin-2 pi-pi scattering from lattice QCD
The phase-shift of isospin-2 pi-pi scattering lattice QCD
2011/1/7
Finite-volume lattice QCD calculations offer the possibility of extracting resonance parameters from the energy-dependent elastic phase-shift computed using the Luescher technique. In this letter, as ...
NNLO Benchmarks for Gauge and Higgs Boson Production at TeV Hadron Colliders
NNLO Benchmarks Gauge and Higgs Boson Production
2011/1/7
The inclusive production cross sections for $W^+, W^-$ and $Z^0$-bosons form important benchmarks for the physics at hadron colliders. We perform a detailed comparison of the predictions for these sta...
Very High Precision Determination of Low-Energy Parameters: The 2-d Heisenberg Quantum Antiferromagnet as a Test Case
Precision Determination Low-Energy Parameters
2011/1/7
The 2-d spin 1/2 Heisenberg antiferromagnet with exchange coupling $J$ is investigated on a periodic square lattice of spacing $a$ at very small temperatures using the loop-cluster algorithm. Monte Ca...
Vortex content of calorons and deconfinement mechanism
Vortex content calorons deconfinement mechanism
2011/1/7
We reveal the center vortex content of SU(2) calorons and ensembles of them. While one part of the vortex connects the constituent dyons of a single caloron, another part is predominantly spatial and ...
Scalar and Pseudoscalar Correlators in Yang-Mills Theory
Scalar Pseudoscalar Correlators Yang-Mills Theory
2011/1/7
Correlation functions of the FF and F\tilde{F} operators in hot SU(3) Yang-Mills theory have recently been studied both on the lattice and in perturbation theory, and the results subsequently compared...
Strange Quark Mass and $1^{++}$ Nonet Singlet-Octet Mixing Angle
Strange Quark Mass $1^{++}$ Nonet Singlet-Octet Mixing Angle
2011/1/7
We compute the strange quark mass from the analysis of the $f_1(1420)-f_1(1285)$ mass difference QCD sum rule, where the operator-product-expansion series is up to dimension six and to ${\cal O}(\alph...
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. The group G(2) has only one trivial center ...
UV and IR Zeros of Gauge Theories at The Four Loop Order and Beyond
UV IR Zeros of Gauge Theories
2011/1/7
We unveil the general features of the phase diagram for any gauge theory with fermions transforming according to distinct representations of the underlying gauge group, at the four-loop order. We clas...
Analytic Approximations for the Extrapolation of Lattice Data
Analytic Approximations the Extrapolation
2011/1/7
We present analytic approximations of chiral SU(3) amplitudes for the extrapolation of lattice data to the physical masses and the determination of Next-to-Next-to-Leading-Order low-energy constants. ...
Chiral symmetry breaking revisited: the gap equation with lattice ingredients
Chiral symmetry breaking revisited the gap equation lattice ingredients
2011/1/7
We study chiral symmetry breaking in QCD, using as ingredients in the quark gap equation recent lattice results for the gluon and ghost propagators. The Ansatz employed for the quark-gluon vertex is p...
Confinement and deconfinement for any gauge group from dyons viewpoint
Confinement deconfinement dyons viewpoint
2011/1/7
Basing on a semiclassical picture of dyons, we present a nonperturbative model of a pure Yang--Mills theory at any temperatures, for an arbitrary simple gauge group. We argue that at low temperatures ...
Possible splitting of deconfinement and chiral transitions in strong magnetic fields in QCD
Possible splitting of deconfinement chiral transitions
2011/1/7
We show that finite-temperature deconfinement and chiral transitions can split in a strong enough magnetic field. The splitting in critical temperatures of these transitions in a constant magnetic fie...