arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1602.07673hep-thgr-qchep-ph
收藏

为什么防火墙不需要存在

Why Firewalls Need Not Exist

Yasunori Nomura, Nico Salzetta

摘要:

黑洞的防火墙悖论通常被认为表明了么正性和等效原理之间的冲突。我们阐明如何悖论表现为半经典理论的局限性,而不是提出了基本原则之间的冲突。基本理论和半经典理论的两个主要特征解决了这个悖论的两个版本:纠缠和典型性论证。首先,在半经典理论中描述固定黑洞背景上的激发的物理希尔伯特空间比量子引力基本理论中的物理状态数指数地小。其次,除了物理激发的希尔伯特空间,半经典理论还拥有一个非物理的大福克空间,它是由在固定的黑洞背景上的产生和湮灭算符建立的。理解这些特征不仅消除了防火墙的必要性,而且还导致了霍金发射对比对在地平线上创造的新画面。

英文摘要:

The firewall paradox for black holes is often viewed as indicating a conflict between unitarity and the equivalence principle. We elucidate how the paradox manifests as a limitation of semiclassical theory, rather than presents a conflict between fundamental principles. Two principal features of the fundamental and semiclassical theories address two versions of the paradox: the entanglement and typicality arguments. First, the physical Hilbert space describing excitations on a fixed black hole background in the semiclassical theory is exponentially smaller than the number of physical states in the fundamental theory of quantum gravity. Second, in addition to the Hilbert space for physical excitations, the semiclassical theory possesses an unphysically large Fock space built by creation and annihilation operators on the fixed black hole background. Understanding these features not only eliminates the necessity of firewalls but also leads to a new picture of Hawking emission contrasting pair creation at the horizon.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑