Lessons from Schwinger Effective Action for Black Holes [PDF]
Sang Pyo KimWe revisit the Hawking radiation by comparing the effective actions in the in-out formalism, and advance an interpretation of the vacuum polarization and the Hawking radiation. The equivalence exists between the spinor QED effective action in a constant electric field and the nonperturbative effective action of a massless boson on the horizon of a Schwarzschild black hole.View original: http://arxiv.org/abs/1204.3973
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