排序方式: 共有128条查询结果,搜索用时 408 毫秒
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在拖曳坐标系中,从反常的角度讨论了Kerr-de Sitter黑洞的霍金辐射.为了描述可观测的物理现象,我们忽略事件视界处的入射模和宇宙视界处的出射模来建立有效理论.结果表明,用来恢复事件视界和宇宙视界处的规范流和能动张量流精确地等于霍金辐射流. 相似文献
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从粒子的Dirac方程出发计算了黎西旋系数,并通过构造合适的零标架,引入广义乌龟坐标变换,Dirac方程被退耦,利用Damour-Ruffinni方法,获得了整体单极动态时空中粒子的霍金辐射谱. 相似文献
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2004年7月21日对于众多的黑洞物理学家来说是一个重要的日子。在爱尔兰都柏林举行的第17届国际广义相对论和引力大会上,坐在轮椅上的霍金,用他名的、带有金属混响的人工合成声音庄严地宣称:“我想报告的是我已经解决了理论物理中的一个主要问题。”霍金用这句话做开场白,侃 相似文献
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全球气候变暖,物种灭绝加快,资源日益枯竭,核灾难一触即发……地球正面临种种十分严峻的危机,难怪著名物理学家霍金发出了“人类必须离开地球”的警示。 相似文献
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讨论了弱相对论近似下黑洞引力场,重质量标量粒子的有限运动,在史瓦希场中采用边界条件σ=0,我们得到了粒子产生幅和俘获幅之间的关系。 相似文献
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Baocheng Zhang ? Qingyu Cai ? Mingsheng Zhan ? Li You 《科学通报(英文版)》2014,59(11):1057-1065
Since the discovery of Hawking radiation, its consistency with quantum theory has been widely questioned. In the widely described picture, irrespective of what initial state a black hole starts with before collapsing, it eventually evolves into a thermal state of Hawking radiations after the black hole is exhausted. This scenario violates the principle of unitarity as required for quantum mechanics and leads to the acclaimed ‘‘information loss paradox'. This paradox has become an obstacle or a reversed touchstone for any possible theory to unify the gravity and quantum mechanics. Based on the results from Hawking radiation as tunneling, we recently show that Hawking radiations can carry off all information about the collapsed matter in a black hole. After discovering the existence of information-carrying correlation, we show in great detail that entropy is conserved for Hawking radiation based on standard probability theory and statistics. We claim that information previously considered lost remains hidden inside Hawking radiation. More specifically, it is encoded into correlations between Hawking radiations. Our study thus establishes harmony between Hawking radiation and the unitarity of quantum mechanics, which establishes the basis for a significant milestone toward resolving the long-standing information loss paradox. The paper provides a brief review of the exciting development on Hawking radiation. In addition to summarize our own work on this subject, we compare and address other related studies. 相似文献
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要理解宇宙,我们必须从此时此地开始——宇宙是怎样开始的?许多科学家都把这一问题当作是最深奥、最难解的问题之一。然而对于霍金(他可能比其他任何人都接近于回答这一问题)来说,这一问题实际上连答案都没有。以英国剑桥大学为基地的霍金和在瑞士日内瓦欧洲核子中心(CERN)粒子 相似文献