Zobrazeno 1 - 10
of 47
pro vyhledávání: '"Fister, Leonard"'
Publikováno v:
Phys. Rev. D 94, 054005 (2016)
We investigate Landau gauge $SU(3)$ Yang-Mills theory in a systematic vertex expansion scheme for the effective action with the functional renormalisation group. Particular focus is put on the dynamical creation of the gluon mass gap at non-perturbat
Externí odkaz:
http://arxiv.org/abs/1605.01856
Autor:
Fister, Leonard, Pawlowski, Jan Martin
We study a $\phi^4$-theory at finite temperature in a finite volume. Quantum, thermal and volume fluctuations are treated with the functional renormalisation group. Specifically, we focus on the interplay of temperature and length scales driving the
Externí odkaz:
http://arxiv.org/abs/1504.05166
Publikováno v:
Phys. Rev. D 94, 034016 (2016)
We present an analysis of the dynamics of two-flavour QCD in the vacuum. Special attention is payed to the transition from the high energy quark-gluon regime to the low energy regime governed by hadron dynamics. This is done within a functional renor
Externí odkaz:
http://arxiv.org/abs/1412.1045
We provide a complete description of the angular distribution of gluons in a medium-induced QCD cascade. We identify two components in the distribution, a soft component dominated by soft multiple scatterings, and a hard component dominated by a few
Externí odkaz:
http://arxiv.org/abs/1409.6202
Autor:
Fister, Leonard, Iancu, Edmond
We study the gluon cascade generated via successive medium-induced branchings by an energetic parton propagating through a dense QCD medium. We focus on the high-energy regime where the energy $E$ of the leading particle is much larger than the chara
Externí odkaz:
http://arxiv.org/abs/1409.2010
Autor:
Fister, Leonard, Maas, Axel
Publikováno v:
Phys. Rev. D 90, 056008 (2014)
Vertices describe the interactions between the fundamental degrees of freedom, and are therefore of vital importance in many ab-initio descriptions of field theory, especially using functional methods. To this end, we present the first lattice study
Externí odkaz:
http://arxiv.org/abs/1406.0638
We investigate 2-colour QCD with 2 flavours of Wilson fermion at nonzero temperature T and quark chemical potential mu, with a pion mass of 700 MeV (m_pi/m_rho=0.8). From temperature scans at fixed mu we find that the critical temperature for the sup
Externí odkaz:
http://arxiv.org/abs/1311.1367
Publikováno v:
Phys. Rev. D 90, 091501 (2014)
We compute non-perturbative gluon spectral functions at finite temperature in quenched QCD with the maximum entropy method. We also provide a closed loop equation for the spectral function of the energy-momentum tensor in terms of the gluon spectral
Externí odkaz:
http://arxiv.org/abs/1308.4960
We employ the Dyson-Schwinger equations for quark and gluon propagators in order to study QCD with 2+1 flavours at finite temperature and density. In a suitable truncation for these equations, we determine the position of the critical end-point as we
Externí odkaz:
http://arxiv.org/abs/1308.4509
The Polyakov loop potential serves to distinguish between the confined hadronic and the deconfined quark-gluon plasma phases of QCD. For Nf=2+1 quark flavors with physical masses we determine the Polyakov loop potential at finite temperature and dens
Externí odkaz:
http://arxiv.org/abs/1306.6022