Primordial fluctuations from nonlinear couplings
We study the spectrum of primordial fluctuations in theories where the inflaton field is nonlinearly coupled to massless fields and/or to itself. Conformally invariant theories generically predict a scale-invariant spectrum. Scales entering the theory through infrared divergences cause logarithmic c...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_15507998_v55_n4_p1812_Calzetta |
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todo:paper_15507998_v55_n4_p1812_Calzetta2023-10-03T16:23:33Z Primordial fluctuations from nonlinear couplings Calzetta, E.A. Gonorazky, S. We study the spectrum of primordial fluctuations in theories where the inflaton field is nonlinearly coupled to massless fields and/or to itself. Conformally invariant theories generically predict a scale-invariant spectrum. Scales entering the theory through infrared divergences cause logarithmic corrections to the spectrum, tilting it towards the blue. We discuss in some detail whether these fluctuations are quantum or classical in nature. © 1997 The American Physical Society. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15507998_v55_n4_p1812_Calzetta |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
We study the spectrum of primordial fluctuations in theories where the inflaton field is nonlinearly coupled to massless fields and/or to itself. Conformally invariant theories generically predict a scale-invariant spectrum. Scales entering the theory through infrared divergences cause logarithmic corrections to the spectrum, tilting it towards the blue. We discuss in some detail whether these fluctuations are quantum or classical in nature. © 1997 The American Physical Society. |
| format |
JOUR |
| author |
Calzetta, E.A. Gonorazky, S. |
| spellingShingle |
Calzetta, E.A. Gonorazky, S. Primordial fluctuations from nonlinear couplings |
| author_facet |
Calzetta, E.A. Gonorazky, S. |
| author_sort |
Calzetta, E.A. |
| title |
Primordial fluctuations from nonlinear couplings |
| title_short |
Primordial fluctuations from nonlinear couplings |
| title_full |
Primordial fluctuations from nonlinear couplings |
| title_fullStr |
Primordial fluctuations from nonlinear couplings |
| title_full_unstemmed |
Primordial fluctuations from nonlinear couplings |
| title_sort |
primordial fluctuations from nonlinear couplings |
| url |
http://hdl.handle.net/20.500.12110/paper_15507998_v55_n4_p1812_Calzetta |
| work_keys_str_mv |
AT calzettaea primordialfluctuationsfromnonlinearcouplings AT gonorazkys primordialfluctuationsfromnonlinearcouplings |
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1807323193852035072 |