Quantum corrections to the primordial tensor spectrum: open EFTs & Markovian decoupling of UV modes
Abstract Perturbative quantum corrections to primordial power spectra are important for testing the robustness and the regime of validity of inflation as an effective field theory. Although this has been done extensively for the density power spectrum (and, to some extent, for the tensor spectrum) u...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-08-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP08(2022)225 |
| _version_ | 1811285835852546048 |
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| author | Suddhasattwa Brahma Arjun Berera Jaime Calderón-Figueroa |
| author_facet | Suddhasattwa Brahma Arjun Berera Jaime Calderón-Figueroa |
| author_sort | Suddhasattwa Brahma |
| collection | DOAJ |
| description | Abstract Perturbative quantum corrections to primordial power spectra are important for testing the robustness and the regime of validity of inflation as an effective field theory. Although this has been done extensively for the density power spectrum (and, to some extent, for the tensor spectrum) using loop corrections, we do so in an open quantum system approach to the problem. Specifically, we calculate the first-order corrections to the primordial gravitational wave spectrum due to (cubic) tensor interactions alone. We show that our results match expectations from standard loop corrections only in the strict Markovian limit, and therefore, establish a systematic way to relax this approximation in the future, as is generally necessary for gravitational systems. |
| first_indexed | 2024-04-13T02:49:50Z |
| format | Article |
| id | doaj.art-cd514e8b681b41e58dbda0299cdb1bee |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-13T02:49:50Z |
| publishDate | 2022-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-cd514e8b681b41e58dbda0299cdb1bee2022-12-22T03:05:52ZengSpringerOpenJournal of High Energy Physics1029-84792022-08-012022813410.1007/JHEP08(2022)225Quantum corrections to the primordial tensor spectrum: open EFTs & Markovian decoupling of UV modesSuddhasattwa Brahma0Arjun Berera1Jaime Calderón-Figueroa2Higgs Centre for Theoretical Physics, School of Physics and Astronomy, University of EdinburghHiggs Centre for Theoretical Physics, School of Physics and Astronomy, University of EdinburghHiggs Centre for Theoretical Physics, School of Physics and Astronomy, University of EdinburghAbstract Perturbative quantum corrections to primordial power spectra are important for testing the robustness and the regime of validity of inflation as an effective field theory. Although this has been done extensively for the density power spectrum (and, to some extent, for the tensor spectrum) using loop corrections, we do so in an open quantum system approach to the problem. Specifically, we calculate the first-order corrections to the primordial gravitational wave spectrum due to (cubic) tensor interactions alone. We show that our results match expectations from standard loop corrections only in the strict Markovian limit, and therefore, establish a systematic way to relax this approximation in the future, as is generally necessary for gravitational systems.https://doi.org/10.1007/JHEP08(2022)225Non-Equilibrium Field TheoryClassical Theories of GravityEffective Field Theories |
| spellingShingle | Suddhasattwa Brahma Arjun Berera Jaime Calderón-Figueroa Quantum corrections to the primordial tensor spectrum: open EFTs & Markovian decoupling of UV modes Journal of High Energy Physics Non-Equilibrium Field Theory Classical Theories of Gravity Effective Field Theories |
| title | Quantum corrections to the primordial tensor spectrum: open EFTs & Markovian decoupling of UV modes |
| title_full | Quantum corrections to the primordial tensor spectrum: open EFTs & Markovian decoupling of UV modes |
| title_fullStr | Quantum corrections to the primordial tensor spectrum: open EFTs & Markovian decoupling of UV modes |
| title_full_unstemmed | Quantum corrections to the primordial tensor spectrum: open EFTs & Markovian decoupling of UV modes |
| title_short | Quantum corrections to the primordial tensor spectrum: open EFTs & Markovian decoupling of UV modes |
| title_sort | quantum corrections to the primordial tensor spectrum open efts markovian decoupling of uv modes |
| topic | Non-Equilibrium Field Theory Classical Theories of Gravity Effective Field Theories |
| url | https://doi.org/10.1007/JHEP08(2022)225 |
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