One-loop corrections to the primordial tensor spectrum from massless isocurvature fields
We study one-loop corrections to the two-point correlation function of tensor perturbations in primordial cosmology induced by massless spectator matter fields. Using the Schwinger-Keldysh formalism in cosmological perturbation theory, we employ dimensional regularization and cutoff regularization t...
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| Format: | Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/145595 |
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| Institution: | Nanyang Technological University |
| Language: | English |