arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1502.04324hep-thgr-qcquant-ph
收藏

霍金辐射对么正性的破坏并不违反能量动量守恒

Violation of unitarity by Hawking radiation does not violate energy-momentum conservation

H. Nikolic

摘要:

Banks、Susskind和Peskin(BSP)的一个论点,根据这个论点,违反么正性将违反定域性或能量动量守恒,被广泛认为是反对霍金辐射非么正性的有力论据。我们发现,整个BSP参数依赖于关键的假设,哈密顿量是不是高度退化,并指出,这一假设是不满足系统的多个自由度。利用林德布拉德方程,我们证明了高度简并的哈密顿量允许局域非幺正演化而不违反能量动量守恒。此外,由于能量动量是引力的来源,我们认为,能量动量必然是一类非酉系统的引力守恒。最后,我们明确地计算了非幺正霍金辐射的Lindblad算子,并表明它们是能量动量守恒的。

英文摘要:

An argument by Banks, Susskind and Peskin (BSP), according to which violation of unitarity would violate either locality or energy-momentum conservation, is widely believed to be a strong argument against non-unitarity of Hawking radiation. We find that the whole BSP argument rests on the crucial assumption that the Hamiltonian is not highly degenerate, and point out that this assumption is not satisfied for systems with many degrees of freedom. Using Lindblad equation, we show that high degeneracy of the Hamiltonian allows local non-unitary evolution without violating energy-momentum conservation. Moreover, since energy-momentum is the source of gravity, we argue that energy-momentum is necessarily conserved for a large class of non-unitary systems with gravity. Finally, we explicitly calculate the Lindblad operators for non-unitary Hawking radiation and show that they conserve energy-momentum.

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。

↑