发表机构
RIKEN iTHEMS; Department of Physics, Kindai University; School of Engineering Science, Kochi University of Technology（理化学研究所 iTHEMS; 近畿大学物理系; 高知工科大学工程科学学部）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
该研究在无视界致密天体模型中分析引力波回波，发现奇宇称引力波因强红移被困且回波延迟超过宇宙年龄，导致回波不可观测，并探讨了量子黑洞与经典黑洞的观测区分。
AI 中文摘要
我们研究了一个无视界致密天体模型中的引力波回波，该模型是半经典爱因斯坦方程的非微扰解，从体结构再现了熵-面积定律。通过采用经典广义相对论（GR）中的各向异性流体模型，我们表明奇宇称引力波不会在物体表面被反射，而是由于指数级强的红移而被困在内部，并且回波延迟时间极大地超过了宇宙的年龄。因此，回波信号实际上是不可观测的，这与当前回波搜索的零结果一致。最后，我们讨论了如何从观测上区分这种量子黑洞和传统的经典黑洞。
英文摘要
We investigate gravitational-wave echoes in a horizonless compact object model, a non-perturbative solution of the semi-classical Einstein equation that reproduces the entropy-area law from the bulk structure. By employing a model of anisotropic fluids in classical general relativity (GR), we show that odd-parity gravitational waves are not reflected at the object's surface but are trapped inside due to the exponentially strong redshift, and that the echo-delay time extremely exceeds the age of the Universe. Consequently, the echo signals are effectively unobservable, which is consistent with current null results from echo searches. We finally discuss how this quantum black hole and the conventional classical black hole could be distinguished observationally.
Comments12 pages, 6 figures
