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We study the region of the QCD phase transition using 2+1 flavors of domain wall fermions (DWF) and a $16^3 \times 8$ lattice volume with a fifth dimension of $L_s = 32$. The disconnected light quark chiral susceptibility, quark number…

高能物理 - 格点 · 物理学 2010-04-14 M. Cheng , N. H. Christ , P. Hegde , F. Karsch , Min Li , M. F. Lin , R. D. Mawhinney , D. Renfrew , P. Vranas

We present our investigations of SU($N$) adjoint QCD in two dimensions with one Majorana fermion on the lattice. We determine the relevant parameter range for the simulations with Wilson fermions and present results for Polyakov loop,…

高能物理 - 格点 · 物理学 2024-04-08 Georg Bergner , Stefano Piemonte , Mithat Ünsal

The basic properties of the confinement mechanism in QCD -- the temperature dependence of the spatial and temporal string tensions ($\sigma_s(T)$ and $\sigma_E(T)$) -- are studied in the framework of the Field Correlator Method (FCM). It is…

高能物理 - 唯象学 · 物理学 2024-08-26 N. O. Agasian , Z. V. Khaidukov , M. S. Lukashov , Yu. A. Simonov

We study spatial isovector meson correlators in $N_f=2$ QCD with dynamical domain-wall fermions on $32^3\times 8$ lattices at temperatures up to 380 MeV with various quark masses. We measure the correlators of spin-one isovector operators…

I report on recent results obtained within the Hamiltonian approach to QCD in Coulomb gauge. By relating the Gribov confinement scenario to the center vortex picture of confinement it is shown that the Coulomb string tension is tied to the…

高能物理 - 理论 · 物理学 2017-04-05 H. Reinhardt , G. Burgio , D. Campagnari , E. Ebadati , J. Heffner , M. Quandt , P. Vastag , H. Vogt

The meson screening mass in the pseudoscalar channel is calculated from the momentum dependent meson spectral function, using HTL fermionic propagators. A careful subtraction procedure is required to get an UV finite result. It is shown…

高能物理 - 唯象学 · 物理学 2008-11-26 W. M. Alberico , A. Beraudo , A. Czerska , P. Czerski , A. Molinari

QCD thermodynamics is considered using Wilson fermions in the fixed scale approach. The temperature dependence of the renormalized chiral condensate, quark number susceptibility and Polyakov loop is measured at four lattice spacings…

高能物理 - 格点 · 物理学 2015-06-05 S. Borsanyi , S. Durr , Z. Fodor , C. Hoelbling , S. D. Katz , S. Krieg , D. Nogradi , B. C. Toth , N. Trombitas , K. K. Szabo

We explore the continuum limit $a\rightarrow 0$ of meson correlation functions at finite temperature. In detail we analyze finite volume and lattice cut-off effects in view of possible consequences for continuum physics. We perform…

高能物理 - 格点 · 物理学 2015-03-18 Anthony Francis , Frithjof Karsch

We study SU(3) gluon electric and magnetic masses at finite temperatures using quenched lattice QCD on a $20^2 \times 32 \times 6$ lattice. We focus on temperature regions between $T=T_c$ and $6T_c$, which are realized in BNL Relativistic…

高能物理 - 格点 · 物理学 2009-11-10 A. Nakamura , T. Saito , S. Sakai

We propose a set of lattice measurements which could test whether the deconfined, quark-gluon plasma, phase of QCD shows strong coupling aspects at temperatures a few times the critical temperature for deconfinement, in the region where the…

高能物理 - 唯象学 · 物理学 2009-11-05 E. Iancu , A. H. Mueller

We present results for mesonic propagators in temporal and spatial directions at T below and above the deconfining transition in quenched QCD. Anisotropic lattices are used to get enough information in the temporal direction. We use the…

A non-perturbative (np) method of Field Correlators (FCM) was applied to study QCD at temperatures above the deconfinement transition ($1<T/T_c<3,~T_c\sim0.16~GeV$) and nonzero baryon densities (baryon chemical potential $\mu_B<0.5~GeV$) in…

高能物理 - 唯象学 · 物理学 2020-01-29 R. A. Abramchuk , M. A. Andreichikov , Z. V Khaidukov , Yu. A. Simonov

Screening properties of the quark gluon plasma are studied from Polyakov-loop correlation in lattice QCD simulations with two flavors of improved Wilson quarks at temperatures $T/\Tpc \simeq 1$--4 where $\Tpc$ is the pseudocritical…

高能物理 - 格点 · 物理学 2010-01-21 Y. Maezawa , S. Aoki , S. Ejiri , T. Hatsuda , N. Ishii , K. Kanaya , N. Ukita , T. Umeda

We study spatial isovector meson correlators in $N_f=2$ QCD with dynamical domain-wall fermions on $32^3\times 8$ lattices at temperatures $T=220-380$ MeV. We measure the correlators of spin-one ($J=1$) operators including vector,…

高能物理 - 格点 · 物理学 2019-02-11 C. Rohrhofer , Y. Aoki , G. Cossu , H. Fukaya , L. Ya. Glozman , S. Hashimoto , C. B. Lang , S. Prelovsek

From continuum studies it is known that the Coulomb string tension $\sigma_C$ gives an upper bound for the physical (Wilson) string tension $\sigma_W$ [D. Zwanziger, Phys. Rev. Lett. 90, 102001 (2003)]. How does however such relationship…

高能物理 - 格点 · 物理学 2015-09-02 G. Burgio , M. Quandt , H. Reinhardt , H. Vogt

We investigate mesonic screening correlators at T=2T_c using the overlap Fermions in the quenched approximation, where T_c is the QCD phase transition temperature. Using lattices with temporal extent up to 8, we found that both pseudoscalar…

高能物理 - 格点 · 物理学 2008-11-26 Rajiv V. Gavai , Sourendu Gupta , Robert Lacaze

Hadronic correlation functions at finite temperature in QCD, with four flavours of dynamical quarks, have been analyzed both above and below the chiral symmetry restoration temperature. We have used both point and extended sources for…

高能物理 - 格点 · 物理学 2009-10-22 G. Boyd , Sourendu Gupta , F. Karsch , E. Laermann

We investigate medium effects on mesonic screening lengths for QCD with 2-flavours of dynamical staggered quarks on lattices with cutoff a=1/6T. Denoting the cross-over temperature by $T_c$, we vary the temperature T from 0.89$T_c$ to…

高能物理 - 格点 · 物理学 2010-11-02 Debasish Banerjee , Rajiv Gavai , Sourendu Gupta

We evaluate equal time point to point spatial correlation functions of mesonic currents at finite temperature. For this purpose we consider the QCD vacuum structure in terms of quark antiquark condensates and their fluctuations in terms of…

高能物理 - 唯象学 · 物理学 2014-11-17 Varun Sheel , Hiranmaya Mishra , Jitendra C. Parikh

We study the (2+1)-flavor QCD at nonzero temperatures using nonperturbatively improved Wilson quarks of the physical masses by the fixed scale approach. We perform physical point simulations at finite temperatures with the coupling…

高能物理 - 格点 · 物理学 2015-11-17 T. Umeda , S. Ejiri , R. Iwami , K. Kanaya