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相关论文: High density quark matter in the NJL model with di…

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We apply a random matrix model to the study of the phase diagram of QCD with two colors, two flavors, and a small quark mass. Although the effects of temperature are only included schematically, this model reproduces most of the ground…

高能物理 - 唯象学 · 物理学 2016-09-06 Benoit Vanderheyden , A. D. Jackson

In this paper, the NJL-type model is used to investigate the color superconductivity. The four-fermion interactions of the NJL-type model are Fierz-transformed into two different classes, i.e., the quark-antiquark and the quark-quark…

核理论 · 物理学 2020-10-07 Li-Qun Su , Chao Shi , Yong-Hui xia , Hongshi Zong

The strange quark star is investigated within the enlarged SU(3) Nambu-Jona-Lasinio (NJL). The stable quark star exists till maximal configutation with rho_m=3.1, 10^15, g/cm^3 with M_m=1.61, M_Sun and R_m=8.74, km is reached. Strange…

核理论 · 物理学 2008-11-26 R. Manka , I. Bednarek , G. Przybyla

In this paper, we use a three flavor non-local Nambu--Jona-Lasinio (NJL) model, an~improved effective model of Quantum Chromodynamics (QCD) at low energies, to investigate the existence of deconfined quarks in the cores of neutron stars.…

高能天体物理现象 · 物理学 2017-01-26 R. D. Mellinger , F. Weber , W. Spinella , G. A. Contrera , M. G. Orsaria

We investigate the influence of the allowed unphysical meson decay into a quark-antiquark pair of the three flavour Nambu--Jona-Lasinio (NJL) model on its parameter fixing. This decay manifests in a non-vanishing imaginary part of the…

高能物理 - 唯象学 · 物理学 2022-01-27 Dominic Kraatz , Michel Stillger

We study the possible existence of deconfined quark matter in the interior of neutron stars using the Nambu-Jona-Lasinio model to describe the quark phase. We find that typical neutron stars with masses around 1.4 solar masses do not…

天体物理学 · 物理学 2009-10-31 K. Schertler , S. Leupold , J. Schaffner-Bielich

We construct the nuclear and quark matter equations of state at zero temperature in an effective quark theory (the Nambu-Jona-Lasinio model), and discuss the phase transition between them. The nuclear matter equation of state is based on…

核理论 · 物理学 2010-02-17 W. Bentz , T. Horikawa , N. Ishii , A. W. Thomas

We implement a Bayesian analysis of the properties of non-rotating hybrid stars at equilibrium with quark matter cores, as described by the SU(3) Nambu--Jona-Lasinio (NJL) model. The hadronic phase is described by a unified metamodeling…

高能天体物理现象 · 物理学 2022-03-16 Antoine Pfaff , Hubert Hansen , Francesca Gulminelli

We investigate the phase structure of two-color QCD at both real and imaginary chemical potentials mu, performing lattice simulations and analyzing the data with the Polyakov-loop extended Nambu--Jona-Lasinio (PNJL) model. Lattice QCD…

The NJL model for the octet baryons, using proper time regularization to simulate some of the features of confinement, is solved self-consistently in nuclear matter. This provides an alternative framework to the MIT bag model which has been…

核理论 · 物理学 2016-10-07 D. L. Whittenbury , M. E. Carrillo-Serrano , A. W. Thomas

The precise measurement of the high masses of the pulsars PSR J1614-2230 (M_{1614}=1.97 +- 0.04 solar masses) and PSR J0348-0432 (M_{0348}=2.01 +- 0.04 solar masses) provides an important constraint for the equation of state of cold, dense…

核理论 · 物理学 2013-10-30 T. Klahn , D. B. Blaschke , R. Łastowiecki

We investigate the effect of electric and color charge neutrality on the two-flavor color superconducting (2SC) phase of cold and dense quark matter in presence of constant external magnetic fields and at moderate baryon densities. Within…

核理论 · 物理学 2015-10-21 Tanumoy Mandal , Prashanth Jaikumar

In a previous work, we proposed an extended Nambu--Jona-Lasinio (NJL) model including heavy quark flavors. In this work, we will calculate strong and radiative decays of vector mesons in this extended NJL model, including light $\rho$,…

高能物理 - 唯象学 · 物理学 2015-06-15 Hong-Bo Deng , Xiao-Lin Chen , Wei-Zhen Deng

We calculate the one-point function of certain chiral operators, known as open Wilson lines, in the holographic Nambu-Jona-Lasinio (NJL) model at finite temperature as well as finite chemical potential for quark (baryon) number density.…

高能物理 - 理论 · 物理学 2009-06-30 Mohammad Edalati , Justin F. Vazquez-Poritz

It is shown that spin polarization with respect to each flavor in three-flavor quark matter occurs instead of the color-flavor locking at high baryon density by using the Nambu-Jona-Lasinio model with four-point tensor-type interaction.…

高能物理 - 唯象学 · 物理学 2015-01-21 Y. Tsue , J. da Providencia , C. Providencia , M. Yamamura , H. Bohr

We study the phase structure of the unpolarized and polarized two-flavor quark matters at zero and finite temperatures within the Nambu--Jona-Lasinio (NJL) model. We focus on the region, which includes the coexisting phase of…

高能物理 - 唯象学 · 物理学 2007-09-17 M. Inui , H. Kohyama , A. Niégawa

The Nambu-Jona-Lasinio and Sakai-Sugimoto models are juxtaposed, focusing on the models' dynamically generated masses and the phase diagrams. The models are studied in the parameter space of temperature, constant electromagnetic fields and…

高能物理 - 理论 · 物理学 2009-09-09 Daiske Yamada

We describe some topics related to massive two and three flavors color superconductivity (CSC), obtained in the framework of high density effective theory (HDET); moreover we present a {\em modified} Nambu-Jona Lasinio model with running -…

高能物理 - 唯象学 · 物理学 2007-05-23 M. Ruggieri

We calculate spectral functions associated with hadronic current correlation functions for vector and pseudoscalar currents at finite temperature. We make use of the Nambu--Jona--Lasinio (NJL) model with temperature-dependent coupling…

高能物理 - 唯象学 · 物理学 2007-05-23 Hu Li , C. M. Shakin , Qing Sun

The gross structure of compact stars composed of pion superfluid quark matter is investigated in the frame of Nambu-Jona-Lasinio model. Under the Pauli-Villars regularization scheme, the uncertainty of the thermodynamic functions for…

核理论 · 物理学 2015-06-18 Shijun Mao