On the puzzle of Bremsstrahlung as described by coaccelerated observers

Details On the puzzle of Bremsstrahlung as described by coaccelerated observers On the puzzle of Bremsstrahlung as described by coaccelerated observers

2005-07-09

arxiv.org/abs/gr-qc/0507040v2

Phys.Rev. D72 (2005) 084018

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

29 pages, 1 figure; Revtex, minor changes, PACS corrected

Scientific paper

10.1103/PhysRevD.72.084018

We consider anew some puzzling aspects of the equivalence of the quantum field theoretical description of Bremsstrahlung from the inertial and accelerated observer's perspectives. More concretely, we focus on the seemingly paradoxical situation that arises when noting that the radiating source is in thermal equilibrium with the thermal state of the quantum field in the wedge in which it is located, and thus its presence does not change there the state of the field, while it clearly does not affect the state of the field on the opposite wedge. How then is the state of the quantum field on the future wedge changed, as it must in order to account for the changed energy momentum tensor there? This and related issues are carefully discussed.

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