arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0706.2767hep-th
收藏

洛伦兹对称破缺下的Unruh探测器

Unruh's detector in the presence of Lorentz symmetry breaking

R. Rashidi, N. Khosravi, E. Khajeh, H. Salehi

摘要:

研究闵可夫斯基空间中具有质量非线性色散关系的洛伦兹非不变模型的量子场论。该模型包含了以超光速群速度传播的波包形式的非因果信号。为了避免因果关系的问题,我们的特点的因果部门的理论的截止条件排除所有超光速群速度。有人认为,在因果理论中满足能量正性条件的一个Unruh的检测器以恒定的速度相对于首选帧移动没有检测到任何粒子。但在违反能量正性的因果理论中,场量子的检测发生了。我们评论这个粒子创建的起源。

英文摘要:

We investigate the quantum field theory of a Lorentz non-invariant model with a massive nonlinear dispersion relation in Minkowski space. The model involves some non-causal signals in the form of wave packets propagating with super-luminal group velocities. To avoid the problems with causality we characterize the causal sector of the theory by a cutoff condition excluding all super-luminal group velocities. It is argued that in the causal theory satisfying the energy positivity condition an Unruh's detector moving with a constant velocity with respect to the preferred frame does not detect any particle. But in a causal theory violating energy positivity, detection of a field quanta occurs. We comment on the origin of this particle creation.

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。

↑