arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2312.03310nucl-thhep-ph
收藏

磁化核物质中的声速

Speed of Sound in Magnetized Nuclear Matter

Rajkumar Mondal, Nilanjan Chaudhuri, Pradip Roy, Sourav Sarkar

AI总结:

该研究利用非线性 Walecka 模型分析有限温度、重子化学势和背景磁场下核物质的相变、声速及压缩系数各向异性,发现平行磁场方向状态方程更硬。

摘要:

我们采用非线性 Walecka 模型,研究在有限温度和重子化学势下、受背景磁场影响的核物质特性。在磁场存在时,$T-μ_B$ 平面中的旋节线和临界端点(CEP)会发生变化。声速平方表现出各向异性行为,分为平行分量和垂直分量。此外,磁场的存在还会引起等温压缩系数的各向异性。研究发现,在所有温度、化学势和磁场取值下,平行分量均小于垂直分量,这表明沿磁场方向的状态方程更硬。

英文摘要:

Employing the non-linear Walecka model we investigate the characteristics of nuclear matter under the influence of a background magnetic field at a finite temperature and baryon chemical potential. In the presence of the magnetic field the spinodal lines and the critical end point (CEP) undergo changes in the $T-μ_B$ plane. The squared speed of sound exhibits anisotropic behavior, dividing into parallel and perpendicular components. Additionally, the presence of a magnetic field induces anisotropy in the isothermal compressibility. It is found that the parallel component is smaller than the perpendicular one for all values of temperature, chemical potential and magnetic field indicating that the equation of state is stiffer along the magnetic field direction.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑