标题： 基于核心坍缩超新星模拟限制过饱和密度状态方程——重子的 excluded 体积扩展 显示英文标题

标题： Constraining the supersaturation density equation of state from core-collapse supernova simulations - Excluded volume extension of the baryons

摘要： 本文探讨了过饱和密度物态方程（EOS）在失败的核心坍缩超新星爆炸模拟中的作用。为此，核EOS通过一参数的有限体积描述扩展至强子，考虑了在超过饱和密度的密度下强子体积的有限性及其随着密度增加而增大。参数的选择使得所得超新星EOS代表极端情况，在过饱和密度处具有高压变化，包括参考情况下（即没有有限体积校正）的极端刚性和软性EOS变体。与中子星内部（其中心密度远高于几倍饱和密度）不同，核心坍缩超新星中心密度仅略高于饱和密度。因此，发现过饱和密度EOS对超新星动力学以及中微子信号的影响可以忽略不计，主要是由未在此广义有限体积方法中修改的低密度和中间密度区域所决定。 显示英文摘要

摘要： In this article the role of the supersaturation density equation of state (EOS) is explored in simulations of failed core-collapse supernova explosions. Therefore the nuclear EOS is extended via a one-parameter excluded volume description for baryons, taking into account their finite and increasing volume with increasing density in excess of saturation density. Parameters are selected such that the resulting supernova EOS represent extreme cases, with high pressure variations at supersaturation density which feature extreme stiff and soft EOS variants of the reference case, i.e. without excluded volume corrections. Unlike in the interior of neutron stars with central densities in excess of several times saturation density, central densities of core-collapse supernovae reach only slightly above saturation density. Hence, the impact of the supersaturation density EOS on the supernova dynamics as well as the neutrino signal is found to be negligible. It is mainly determined from the low- and intermediate-density domain, which is left unmodified within this generalized excluded volume approach.