论文标题
非线性振动腔中的动态casimir效应
Dynamical Casimir effect in nonlinear vibrating cavities
论文作者
论文摘要
运动方程式中的非线性项可以诱导相关函数的世俗增长循环校正。最近，这种校正被证明会通过一个不均匀移动的理想镜会影响颗粒的产生。我们将此结论扩展到理想的振动腔和单共透镜的情况下。这些模型提供了自然的IR和紫外线量表，并可以更准确地研究环行为。在这两种情况下，我们确认对Keldysh繁殖器的两环校正会随时间增长。这种增长表明半经典近似的崩溃，并强调，在大型进化时期，动态casimir效应中的批量非线性不能被忽略。
Nonlinear terms in the equations of motion can induce secularly growing loop corrections to correlation functions. Recently such corrections were shown to affect the particle production by a nonuniformly moving ideal mirror. We extend this conclusion to the cases of ideal vibrating cavity and single semitransparent mirror. These models provide natural IR and UV scales and allow a more accurate study of the loop behavior. In both cases we confirm that two-loop correction to the Keldysh propagator quadratically grows with time. This growth indicates a breakdown of the semiclassical approximation and emphasizes that bulk nonlinearities in the dynamical Casimir effect cannot be neglected for large evolution times.
