霍金辐射与相干态表示  

Hawking Effect and Coherent-state Representation

作　　者：周并举[1] 谢宜辰[1] 

机构地区：[1]湖南科技大学物理学院,湖南湘潭411201

出　　处：《湘潭大学自然科学学报》2007年第2期42-45,共4页Natural Science Journal of Xiangtan University

基　　金：湖南省自然科学基金资助项目(05JJ30004)

摘　　要：在二维弯曲时空引入相干态,并利用此相干态表示,研究了二维Schwarzschild时空中的无质量标量场的性质和渐近行为.结果表明,无质量标量场在黑洞视界附近存在一个“类黑体辐射谱”;特别是当作了某些限制后,这个“类黑体辐射谱”简化为标准的“霍金辐射”.这说明相干态理论在考察弯曲时空的量子性质时也许具有积极的作用和价值.A coherent - state representation in a two - dimension curved spacetime was introduce. With the coherent - state representations the behavior of a massless, scalar field Ф in the two - dimension Schwarzschild specetime was discussed. In the asymptotic region, ＂Hawking effect＂ was obtained and discussed. It was find that the radiation from a black hole is of black - body - like form and agrees with the Hawking radiation if some restriefion is given. This result may imply that the Hawking effect is perhaps the limit result of gravity coherence and suggests that the coherent state representation is a useful tool to investigate the quantization of a massless s scalar field in the curved two - dimension space- time.

关 键 词：霍金辐射 相干态 Schwarzschild时空 

分 类 号：O344.1[理学—固体力学]