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We investigate the phase structure of strongly interacting matter and baryon number fluctuations in the Polyakov loop improved Nambu--Jona-Lasinio (PNJL) model. The calculation shows that both the chiral and deconfinement transitions, as…

高能物理 - 唯象学 · 物理学 2017-08-29 Guo-yun Shao , Zhan-duo Tang , Xue-yan Gao , Wei-bo He

We study the endpoint of the first order deconfinement phase transition of 2 and 2+1 flavor QCD in the heavy quark region. We perform simulations of quenched QCD and apply the reweighting method to study the heavy quark region. The quark…

In this paper we study the influence of hadronic resonances on the phase diagram calculated with an effective chiral flavour SU(3) model. We show that varying the couplings of the baryonic resonances to the attractive scalar and the…

高能物理 - 唯象学 · 物理学 2015-03-19 Philip Rau , Jan Steinheimer , Stefan Schramm , Horst Stöcker

We analyse a $2+1$ dimensional defect field theory on a two sphere in an external magnetic field. The theory is holographically dual to probe D5-branes in global AdS$_5\times S^5$ background. At any finite magnetic field only the confined…

高能物理 - 理论 · 物理学 2014-08-26 Veselin G. Filev

Both in heavy-ion collisions as in magnetars very strong magnetic fields are produced, which has its influence on the phases of matter involved. In this paper we investigate the effect of strong magnetic fields (B = 5 m_pi^2 /e = 1.7 x…

高能物理 - 唯象学 · 物理学 2010-04-14 Jorn K. Boomsma , Daniel Boer

We explore the phase structure of Quantum Chromodynamics (QCD) with two dynamical quark flavors at finite temperature and baryon chemical potential, employing the non-perturbative gauge/gravity duality approach. Our gravitational model is…

高能物理 - 唯象学 · 物理学 2024-04-17 Yan-Qing Zhao , Song He , Defu Hou , Li Li , Zhibin Li

We study the effects of an external magnetic field on the superconducting properties of a quasi-two-dimensional system of Dirac electrons at an arbitrary temperature. An explicit expression for the superconducting gap is obtained as a…

超导电性 · 物理学 2008-11-26 E. C. Marino , Lizardo H. C. M. Nunes

We investigate the effect of the electric-charge neutrality in $\beta$ equilibrium on the chiral phase transition by solving the chiral and diquark condensates in the two-flavor Nambu--Jona-Lasinio model. We demonstrate that the…

高能物理 - 唯象学 · 物理学 2009-01-16 Zhao Zhang , Kenji Fukushima , Teiji Kunihiro

The measurement of the position of the chiral critical end point (CEP) in the QCD phase diagram is under debate. While it is possible to predict its position by using effective models specifically built to reproduce some of the features of…

高能物理 - 唯象学 · 物理学 2015-10-06 Alexandre Biguet , Hubert Hansen , Pedro Costa , Pierre Borgnat , Timothée Brugière

In $\alpha$-RuCl$_3$, an external magnetic field applied within the honeycomb plane can induce a transition from a magnetically ordered state to a disordered state that is potentially related to the Kitaev quantum spin liquid. In zero…

We extend the Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model by introducing an effective four-quark vertex depending on Polyakov loop. The effective vertex generates entanglement interactions between Polyakov loop and chiral…

高能物理 - 唯象学 · 物理学 2014-11-21 Yuji Sakai , Takahiro Sasaki , Hiroaki Kouno , Masanobu Yahiro

We investigate the chiral phase transition of the strongly interacting matter at nonzero temperature and baryon chemical potential $\mu_B$ within an extended (2+1) flavor Polyakov constituent quark-meson model which incorporates the effect…

高能物理 - 唯象学 · 物理学 2017-11-30 Gy. Wolf , P. Kovács

In this conference proceeding, I discuss in detail the deconfinement to quark matter that takes place at large densities and/or temperatures. The first-order phase transition that is assumed to appear beyond a critical point gives rise to…

核理论 · 物理学 2018-01-26 Veronica Dexheimer

The phase diagram of strongly interacting matter at non-zero temperature and baryon chemical potential is calculated within a 3-flavor NJL-type quark model with realistic quark masses. The model exhibits spontaneous chiral symmetry breaking…

高能物理 - 唯象学 · 物理学 2009-11-07 M. Buballa , M. Oertel

High-resolution thermal expansion and magnetostriction measurements were performed on single crystals of $\alpha$-RuCl$_3$ in magnetic fields applied parallel to the Ru-Ru bonds. The length changes were measured in the direction…

We explore the effects of an applied strong external magnetic field in a three flavour massless colour superconductor. The long-range component of the B field that penetrates the superconductor enhances some quark condensates, leading to a…

高能物理 - 唯象学 · 物理学 2009-11-11 Efrain J. Ferrer , Vivian de la Incera , Cristina Manuel

Critical properties of a geometrically frustrated generalized $XY$ model with antiferromagnetic (AFM) and third-order antinematic (AN3) couplings on a triangular lattice are studied by Monte Carlo simulation. It is found that such a…

统计力学 · 物理学 2020-09-16 M. Lach , M. Žukovič

We study the effects of an external magnetic field on thensuperconducting phase diagram of a quasi-two-dimensional system of Dirac electrons at an arbitrary temperature. At zero temperature, there is a quantum phase transition connecting a…

超导电性 · 物理学 2020-10-14 E. C. Marino , Lizardo H. C. M. Nunes

We consider the quark-meson model with two quark flavors in a constant external magnetic field $B$ at finite temperature $T$ and finite baryon chemical potential $\mu_B$. We calculate the full renormalized effective potential to one-loop…

高能物理 - 唯象学 · 物理学 2015-05-28 Jens O. Andersen , Rashid Khan

We study a geometrically frustrated triangular Ising antiferromagnet in an external magnetic field which is selectively diluted with nonmagnetic impurities employing an effective-field theory with correlations and Monte Carlo simulations.…

统计力学 · 物理学 2012-12-24 M. Borovský , M. Žukovič , A. Bobák
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