Nonperturbative QED Effective Action at Finite Temperature - High Energy Physics - TheoryReport as inadecuate




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Abstract: We advance a novel method for the finite-temperature effective action fornonequilibrium quantum fields and find the QED effective action intime-dependent electric fields, where charged pairs evolve out of equilibrium.The imaginary part of the effective action consists of thermal loops of theFermi-Dirac or Bose-Einstein distribution for the initial thermal ensembleweighted with factors for vacuum fluctuations. And the real part of theeffective action is determined by the mean number of produced pairs, vacuumpolarization, and thermal distribution. The mean number of produced pairs isequal to twice the imaginary part. We explicitly find the finite-temperatureeffective action in a constant electric field.



Author: Sang Pyo Kim Kunsan Nat'l Univ., Hyun Kyu Lee Hanyang Univ., Yongsung Yoon Hanyang Univ.

Source: https://arxiv.org/







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