论文标题
有限尺寸对热和磁体的强子共振气体的热力学影响
Finite size effect on the thermodynamics of a hot and magnetized hadron resonance gas
论文作者
论文摘要
在存在外部磁场的情况下，已经研究了有限体积的非相互作用理想强体共振气（HRG）的热力学特性。通过在Landau量化方面修改带电的Hadron的分散关系，将背景磁场纳入热力学潜力的计算。已采用广义Matsubara处方来考虑有限尺寸效应，其中考虑了介子（Baryons）周期性（抗周期性）边界条件。我们发现磁场以及系统大小对能量密度，纵向和横向压力的温度依赖性，尤其是在低温区域的温度依赖性。发现HRG在低（高）温度区域中表现出DIAMAGNETISM（PRAMAGNETISM），而有限的尺寸效应可增强培养基的流动性行为。
The thermodynamic properties of a non-interacting ideal Hadron Resonance Gas (HRG) of finite volume have been studied in the presence of an external magnetic field. The inclusion of background magnetic field in the calculation of thermodynamic potential is done by the modification of the dispersion relations of the charged hadrons in terms of Landau quantization. The generalized Matsubara prescription has been employed to take into account the finite size effects in which a periodic (anti-periodic) boundary conditions is considered for the mesons (baryons). We find significant effects of the magnetic field as well as system size on the temperature dependence of energy density, longitudinal and transverse pressure especially in low temperature regions. The HRG is found to exhibit diamagnetism (paramagnetism) in the low (high) temperature region whereas the finite size effect is seen to strengthen the diamagnetic behavior of the medium.
