论文标题
相对论恒星的绝热指数作为非热耗散系数
Adiabatic index for relativistic stars as a coefficient of non-thermal dissipation
论文作者
论文摘要
由于考虑到介质尺度随机效应，相对论之星的绝热指数（由完美的流体建模）被证明是耗散常数。这种耗散效应是在流体模型中不采用热通量的情况下会产生的，在所考虑的系统中被称为绝热或非热。最近通过经典的爱因斯坦 - 兰格文方程提出了一种用于在大型恒星内部引入随机作用的基本形式。随机性的起源与压力变量（由于成分颗粒的变性）及其波动有关，并且对无压力流体不可行。波动将其费米能量消散到绝热的系统上。这是通过波动的耗散关系显示的，并且定义了与这些波动相关的langevin费米温度。我们到达这里的背景场波动的高幅度可行，可以考虑到扰动强度的强力区域，并具有密集的物质。然而，扰动本身始终如一，相当小，因为一级偏离了平衡。
The adiabatic index of a relativistic star (modeled by a perfect fluid) is shown to act as a dissipation constant due to considerations of mesoscopic scale stochastic effects. This dissipative effect arises without taking heat flux in the fluid model and is termed as adiabatic or non-thermal for the system under consideration. A basic formalism for introducing stochastic effects in interiors of massive stars has recently been proposed via a classical Einstein-Langevin equation. The origin of stochasticity is associated with the pressure variable (due to degeneracy of constituent particles ) and its fluctuations,and is not viable for pressureless fluids. The fluctuations dissipate their fermi energy into perturbing the system, adiabatically. This is shown by a fluctuation dissipation relation, and a Langevin fermi temperature associated with these fluctuations is defined.The high magnitude of background field fluctuations which we get here, is feasible to account for perturbing the strong gravity regions with dense matter. Nevertheless, the perturbations themselves are consistently and reasonably small as first order deviations from equilibrium.
