Energy-Momentum Tensor and Particle Creation in the de Sitter Universe
classification
🌀 gr-qc
keywords
sitterstateuniversevacuumallowapplybackgroundchoice
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For a quantum field in a curved background the choice of the vacuum state is crucial. We exhibit a vacuum state in which the expectation values of the energy and pressure allow an intuitive interpretation. We apply this general result to the de Sitter universe.
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