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We study the rotation effects of the hot and dense QCD matter in a non-perturbative regime by the gauge/gravity duality. We use the gravitational model that is designated to match the state-of-the-art lattice data on the thermal properties…

高能物理 - 唯象学 · 物理学 2023-05-01 Yan-Qing Zhao , Song He , Defu Hou , Li Li , Zhibin Li

We investigate the phase diagram of the so-called Polyakov--Nambu--Jona-Lasinio model at finite temperature and non-zero chemical potential with three quark flavors. Chiral and deconfinement phase transitions are discussed and the relevant…

高能物理 - 唯象学 · 物理学 2014-11-21 Pedro Costa , M. C. Ruivo , C. A. de Sousa , H. Hansen

Chiral phase transition for three-flavor $N_f=2+1$ QCD with $m_u=m_d\neq m_s$ is investigated in a modified soft-wall holographic QCD model. Solving temperature dependent chiral condensates from equations of motion of the modified soft-wall…

高能物理 - 唯象学 · 物理学 2017-03-08 Danning Li , Mei Huang

In a progress toward searching for the QCD critical point, we study the finite density phase transition of $N_f = 4$ and 2 lattice QCD at finite temperature with the canonical ensemble approach. We develop a winding number expansion method…

高能物理 - 格点 · 物理学 2010-10-04 Anyi Li , Andrei Alexandru , Keh-Fei Liu , Xiangfei Meng

The location of the critical end point of QCD has been determined in previous studies of $N_f=2+1$ and $N_f=2+1+1$ dynamical quark flavors using a (truncated) set of Dyson-Schwinger equations for the quark and gluon propagators of…

高能物理 - 唯象学 · 物理学 2016-02-17 Gernot Eichmann , Christian S. Fischer , Christian A. Welzbacher

We study the phase diagram of $N_f = 2+1$ QCD in the $T - \mu_B$ plane and investigate the critical point corresponding to the onset of the Roberge-Weiss transition, which is found for imaginary values of $\mu_B$. We make use of stout…

高能物理 - 格点 · 物理学 2016-04-13 Claudio Bonati , Massimo D'Elia , Marco Mariti , Michele Mesiti , Francesco Negro , Francesco Sanfilippo

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 investigate the critical endpoints of the finite temperature phase transition of QCD at zero chemical potential. We employ the renormalization-group improved Iwasaki gauge action and non-perturbatively O(a)-improved Wilson-clover fermion…

高能物理 - 格点 · 物理学 2019-09-20 Yoshifumi Nakamura , Yoshinobu Kuramashi , Hiroshi Ohno , Shinji Takeda

We present results for the phase diagram of three flavor QCD for \mu_B ~ 500 MeV. Our simulations are performed with imaginary chemical potential \mu_I for which the fermion determinant is positive. Physical observables are then fitted by…

高能物理 - 格点 · 物理学 2008-11-26 Ph. de Forcrand , O. Philipsen

As part of our ongoing investigations of QCD with many flavors of quarks, here we report on studies of the finite temperature phase transition for eight-flavor QCD with the DBW2 gauge action and na\"ive staggered fermions. We find a clear…

高能物理 - 格点 · 物理学 2011-04-28 Xiao-Yong Jin , Robert D. Mawhinney

We investigate the critical endpoint of finite temperature phase transition of $N_f=3$ QCD at zero chemical potential. We employ the renormalization-group improved Iwasaki gauge action and non-perturbatively $O(a)$-improved Wilson-clover…

高能物理 - 格点 · 物理学 2015-06-23 Xiao-Yong Jin , Yoshinobu Kuramashi , Yoshifumi Nakamura , Shinji Takeda , Akira Ukawa

We map out the QCD phase structure at finite temperature and chemical potential for 2-flavour and 2 + 1-flavour QCD. This is done within a generalised functional approach to QCD put forward in arXiv:2002.07500 [hep-ph]. Specifically we…

高能物理 - 唯象学 · 物理学 2021-08-18 Fei Gao , Jan M. Pawlowski

We investigate the phase transitions of (2+Nf)-flavor QCD, where two light flavors and Nf massive flavors exist, aiming to understand the phase structure of (2+1)-flavor QCD. Performing simulations of 2-flavor QCD with improved staggered…

高能物理 - 格点 · 物理学 2015-04-10 Shinji Ejiri , Norikazu Yamada , Hiroshi Yoneyama

In a confining, renormalisable, Dyson-Schwinger equation model of two-flavour QCD we explore the chemical-potential dependence of the dressed-quark propagator, which provides a means of determining the behaviour of the chiral and…

核理论 · 物理学 2010-02-17 A. Bender , G. I. Poulis , C. D. Roberts , S. Schmidt , A. W. Thomas

Within the framework of Dyson-Schwinger equations (DSEs), we discuss the equation of state (EOS) and quark number densities of 2+1 flavors, that is to say, $u$, $d$, and $s$ quarks. The chemical equilibrium and electric charge neutrality…

高能物理 - 唯象学 · 物理学 2016-01-20 Shu-Sheng Xu , Yan Yan , Zhu-Fang Cui , Hong-Shi Zong

We study the phase structure of QCD matter using a dynamical Einstein--Maxwell--Dilaton holographic model, using both thermodynamic and dynamical observables. Depending on the warp factor, the model admits either a standard…

高能物理 - 理论 · 物理学 2025-09-25 Leila Shahkarami , Farid Charmchi

We investigate the chiral phase transition in 2+1 dimensional QED. Previous gap equation and lattice Monte-Carlo studies of symmetry breaking have found that symmetry breaking ceases to occur when the number of fermion flavors exceeds a…

高能物理 - 唯象学 · 物理学 2009-10-28 Thomas Appelquist , John Terning , L. C. R. Wijewardhana

We study the QCD phase diagram on the plane of temperature T and quark chemical potential mu, modelling the strong interactions with the linear sigma model coupled to quarks. The phase transition line is found from the effective potential…

高能物理 - 唯象学 · 物理学 2015-12-09 Alejandro Ayala , Adnan Bashir , J. J. Cobos-Martinez , Saul Hernandez-Ortiz , Alfredo Raya

In order to quantify the universal properties of the chiral phase transition in (2+1)-flavor QCD, we make use of an improved, renormalized order parameter for chiral symmetry breaking which is obtained as a suitable difference of the…

高能物理 - 格点 · 物理学 2024-11-28 Sabarnya Mitra , Frithjof Karsch , Sipaz Sharma

Aiming to understand the phase structure of lattice QCD at nonzero temperature and density, we study the phase transitions of QCD in an extended parameter space, where the number of flavor and quark masses are considered as parameters.…

高能物理 - 格点 · 物理学 2016-11-23 Shinji Ejiri , Ryo Iwami , Norikazu Yamada