基于三维形式因子的非局部 NJL 模型，满足现代天体物理观测和晶格 QCD 约束条件

IF 1.1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astronomische Nachrichten Pub Date : 2023-12-20 DOI:10.1002/asna.20230170

G. A. Contrera, J. P. Carlomagno, A. G. Grunfeld

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引用次数: 0

摘要

在本研究中，我们采用了一个非局部的南布-约纳-拉西尼奥（NJL）模型，其高斯形式因子取决于动量的空间分量（3D-FF）。我们以温度-重子化学势平面为重点，研究了相图的某些方面。首先，我们提出了一个假设，即动量空间的相互作用范围可能会因温度而改变，从而使我们能够根据晶格 QCD（LQCD）的预测获得临界温度值。随后，我们在一个混合框架内考虑了这个模型，以考察温度以及中微子捕获在紧凑物体构型中的影响。

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Fulfilling modern astrophysical observations and lattice QCD constraints based on a nonlocal NJL model with 3D form factor

In the present work, we employ a nonlocal Nambu–Jona–Lasinio (NJL) model with a Gaussian form factor that is dependent on the spatial components of the momentum (3D-FF). Focusing on the temperature-baryon chemical potential plane, we investigate some aspects of the phase diagram. Initially, we propose an assumption that the range of interactions in momentum space may be modified by temperature, allowing us to obtain the critical temperature values based on lattice QCD (LQCD) predictions. Subsequently, we consider this model within a hybrid framework to examine the effects of temperature, together with neutrino trapping, in compact object configurations.

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来源期刊

Astronomische Nachrichten 地学天文-天文与天体物理

CiteScore

1.80

自引率

11.10%

发文量

审稿时长

4-8 weeks

期刊介绍： Astronomische Nachrichten, founded in 1821 by H. C. Schumacher, is the oldest astronomical journal worldwide still being published. Famous astronomical discoveries and important papers on astronomy and astrophysics published in more than 300 volumes of the journal give an outstanding representation of the progress of astronomical research over the last 180 years. Today, Astronomical Notes/ Astronomische Nachrichten publishes articles in the field of observational and theoretical astrophysics and related topics in solar-system and solar physics. Additional, papers on astronomical instrumentation ground-based and space-based as well as papers about numerical astrophysical techniques and supercomputer modelling are covered. Papers can be completed by short video sequences in the electronic version. Astronomical Notes/ Astronomische Nachrichten also publishes special issues of meeting proceedings.