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Participant |
Bavarsad, Ehsan | |||||||
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Institution |
University of Kashan - University of Kashan - Kashan - Isfahan - Iran | |||||||
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Session |
SF1 |
Accepted |
Yes |
Order |
9 |
Time |
18:15 | 20' |
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Talk |
Oral abstract |
Title |
Effect of Schwinger Pair Production on Evolution of the Hubble Constant in de Sitter Spacetime | |||||
| Coauthors | Bavarsad, Ehsan; Xue, She-Sheng | |||||||
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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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Pdf file |
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