论文标题
Quark物质的重力波信号具有逼真的相变
Gravitational Wave Signal for Quark Matter with Realistic Phase Transition
论文作者
论文摘要
最大质量附近的中子恒星（NSS）的核心意识到可以解放夸克自由度的宇宙中最高度压缩的物质。这种密集的物质状态被认为是夸克物质（QM），并且在核物理学中已经等待了数十年的存在。二进制合并的重力波有望传达有用的信息，称为状态方程（EOS）。但是，尚未确定具有现实EOS的QM签名。在这里，我们表明，在合并后阶段的引力波可以区分有或没有过渡到QM的理论方案。我们没有像以前所研究的那样采用特定的EOSS，而是根据从头算法进行了可靠的EOS约束。我们证明，NS合并后的早期崩溃表示与QM发作相关的EOS的软化，这与从头开始的约束相关。强子Quark相变的性质可以受到电磁对应物需要用残余黑洞外的材料加热的条件进一步限制的。
The cores of neutron stars (NSs) near the maximum mass realize the most highly compressed matter in the universe where quark degrees of freedom may be liberated. Such a state of dense matter is hypothesized as quark matter (QM) and its presence has awaited to be confirmed for decades in nuclear physics. Gravitational waves from binary NS mergers are expected to convey useful information called the equation of state (EOS). However, the signature for QM with realistic EOS is not yet established. Here, we show that the gravitational wave in the post-merger stage can distinguish the theory scenarios with and without a transition to QM. Instead of adopting specific EOSs as studied previously, we compile reliable EOS constraints from the ab initio approaches. We demonstrate that early collapse to a black hole after NS merger signifies softening of the EOS associated with the onset of QM in accord with ab initio constraints. Nature of hadron-quark phase transition can be further constrained by the condition that electromagnetic counterparts need to be energized by the material left outside the remnant black hole.
