分段均匀弦的Casimir能量

Casimir能量可看成是由于边界的出现、时空的弯曲以及某些背景场的存在而引起的量子场真空能量极化.由于对Casimir能量的研究能加深对量子场本质的了解,近来对它的研究兴趣正在增加.Brevik等人首先讨论了分段均匀弦的Casiwhr能量.但他们只讨论了闭玻色弦的Casimir能量.本文推广到开和闭的玻色弦,以及费米子弦情形.并且对超弦的Casimir能量也作了探讨.

Casimir Energy for Piecewise Uniform Strings

The Casimir energy can be considered as the polarization of the vacuumenergy of quantized fields due to the distortion caused by the presence of boundaries,the curvature of the space-time mani-fold or some background fields. The study aboutthe Casimir energy can deepen our understanding of the substance of the quantumfields, so the interest in studying Casimir effect has been enhanced recently. Brevik etal. studied the Casimir energy of piecewise uniform strings first. However, they onlydiscussed the one of closed bosonic strings. In this paper, we extend their resaerch toboth open and closed bosonic strings, as well as fermionic strings. The energy ofsuperstrings is investigated briefly too.