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Speaker |
Bavarsad, Ehsan |
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Coauthors |
Bavarsad, Ehsan; Xue, She-Sheng |
| Talk Title |
Effect of Schwinger Pair Production on Evolution of the Hubble Constant in de Sitter Spacetime |
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Abstract |
We consider a massive charged scalar field in a uniform electric field background in a de Sitter spacetime. We compute the in-vacuum expectation value of the trace of the energy-momentum tensor of the Schwinger pairs. Using adiabatic subtraction scheme the trace is regularized. We find that the production of the semiclassical pairs leads to a decay of the Hubble constant. |
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