Torque anomaly in quantum field theory
Torque anomaly in quantum field theory
复制标题
量子场论中的扭矩异常
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
C. S. Trendafilova
中科院分区：
文献类型：
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作者：
S. Fulling;F. D. Mera;C. S. Trendafilova
楔形区域内量子场的能量密度和压力的期望值似乎违反了扭矩和总能量之间作为角度的函数的预期关系。特别是，这是真实的著名的多伊奇-坎德拉斯应力张量的电磁场，其定义不需要正则化，除了可能在顶点。与反射边界对垂直壁施加的压力中的类似异常不同，这个问题不能被视为特设正则化的伪影。
The expectation values of energy density and pressure of a quantum field inside a wedge-shaped region appear to violate the expected relationship between torque and total energy as a function of angle. In particular, this is true of the well-known Deutsch--Candelas stress tensor for the electromagnetic field, whose definition requires no regularization except possibly at the vertex. Unlike a similar anomaly in the pressure exerted by a reflecting boundary against a perpendicular wall, this problem cannot be dismissed as an artifact of an ad hoc regularization.