Temperature and strong magnetic field effects in dense matter

Temperature and strong magnetic field effects in dense matter
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致密物质中的温度和强磁场效应

DOI:
10.1103/physrevd.108.063011
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发表时间:
2023
期刊:
影响因子:
5
通讯作者:
Providência, C.
Providência, C.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Peterson, J.;Costa, P.;Kumar, R.;Dexheimer, V.;Negreiros, R.;Providência, C.

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我们一直在研究磁场对热物质和致密物质的影响。特别是,我们寻找由于假设而产生的差异,这些假设再现了粒子碰撞或天体物理场景中产生的条件,例如在完全演化的中子星的核心(超出质子中子星阶段)。我们假设磁场不变或遵循从磁星的广义相对论计算中提取的轮廓,并利用两个能够一致地描述夸克物质手征对称性恢复和去禁闭的现实模型:手征平均场和Polyakov环扩展的Nambu-Jona-Lasinio模型。我们发现,与轻子的净同位旋、净奇异性和弱化学平衡可以显著改变温度和磁场对稠密物质中粒子含量和退禁闭的影响。最后,我们讨论了在实验上探测致密和/或热物质中夸克解禁闭的可能性,以及磁场可能起到的作用。
We study consistently the effects of magnetic field on hot and dense matter. In particular, we look for differences that arise due to assumptions that reproduce the conditions produced in particle collisions or astrophysical scenarios, such as in the core of fully evolved neutron stars (beyond the protoneutron star stage). We assume the magnetic field to be either constant or follow a profile extracted from general relativity calculations of magnetars and make use of two realistic models that can consistently describe chiral symmetry restoration and deconfinement to quark matter, the chiral mean field and the Polyakov-loop extended Nambu-Jona-Lasinio models. We find that net isospin, net strangeness, and weak chemical equilibrium with leptons can considerably change the effects of temperature and magnetic fields on particle content and deconfinement in dense matter. We finish by discussing the possibility of experimentally detecting quark deconfinement in dense and/or hot matter and the possible role played by magnetic fields.
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