高维de Sitter时空中宇宙视界处的Fermi子隧穿  

Fermion tunnels at cosmological horizon of higher dimensional de Sitter space time

作　　者：林恺[1] 杨树政[1] 

机构地区：[1]西华师范大学理论物理研究所,南充637002

出　　处：《物理学报》2010年第4期2223-2227,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10773008)资助的课题~~

摘　　要：运用半经典近似理论,本文研究了来自静态高维deSitter时空和高维Schwarzschild-de Sitter时空宇宙视界处的Fermi子隧穿辐射.在文中,描述1/2自旋粒子行为的Dirac方程被简化为一个简单的形式,接着运用方程组有非平凡解的条件,可以得到了半经典的Hamilton-Jacobi方程,从而使得问题大大得以简化,最终得到了静态de Sitter时空中宇宙视界处的Fermi子隧穿率和Hawking温度.Using semiclassical approximation method,the fermion tunnels at cosmological horizon of higher dimensional de Sitter and Schwarzschild de Sitter space-times are researched in this paper.In our work,the Dirac equation,which describes the property of 1/2 spin particles,is simplified,and then the semiclassical Hamilton-Jacobi equation is obtained via the condition that there are non-trivial solutions of Dirac equation.The research has been simplified greatly,and the Hawking temperature and tunneling rate at cosmological horizon of static higher dimensional de Sitter space time is gotten finally.

关 键 词：de SITTER时空 宇宙视界 DIRAC方程 HAWKING辐射 

分 类 号：P145.8[天文地球—天体物理]