arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0901.1664hep-th
收藏

引力和闭合超弦理论中的Schwinger对产生

On Schwinger Pair Creation in Gravity and in Closed Superstring Theory

Jorge G. Russo

摘要:

我们在引力模型的背景下研究了Schwinger对的产生过程,其中电场的反作用包含在几何结构中。背景也是II型超弦理论的精确解,其中电场由卡鲁扎-克莱因约化产生。我们得到了一个封闭的公式对创建率,包括引力反作用。在弱磁场下,它与一般的施温格公式具有相同的结构,尽管对是由施温格和昂鲁效应的组合产生的,后者是由于林德勒视界的存在。在四维时空中,在强电场下,速率变为常数。对于质量为卡鲁扎-克莱因原点的状态,速率在电场中具有类似幂的依赖性,而不是熟悉的(非微扰)指数依赖性。我们也从缠绕弦态的弦配分函数中重现了相同的公式。最后,我们评论的推广到激发弦状态。

英文摘要:

We investigate the Schwinger pair creation process in the context of gravitational models with the back reaction of the electric field included in the geometry. The background is also an exact solution of type II superstring theory, where the electric field arises by Kaluza-Klein reduction. We obtain a closed formula for the pair creation rate that incorporates the gravitational back reaction. At weak fields it has the same structure as the general Schwinger formula, albeit pairs are produced by a combination of Schwinger and Unruh effect, the latter due to the presence of a Rindler horizon. In four spacetime dimensions, the rate becomes constant at strong electric fields. For states with mass of Kaluza-Klein origin, the rate has a power-like dependence in the electric field, rather than the familiar (non-perturbative) exponential dependence. We also reproduce the same formula from the string partition function for winding string states. Finally, we comment on the generalization to excited string states.

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。

↑