Primordial fluctuations from nonlinear couplings

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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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Autor principal: Calzetta, E.A
Otros Autores: Gonorazky, S.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 1997
Acceso en línea:Registro en Scopus
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100 1 |a Calzetta, E.A. 
245 1 0 |a Primordial fluctuations from nonlinear couplings 
260 |c 1997 
506 |2 openaire  |e Política editorial 
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520 3 |a 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.  |l eng 
593 |a Instituto de Astronomía y Física del Espacio (IAFE), suc 28, Argentina 
700 1 |a Gonorazky, S. 
773 0 |d 1997  |g v. 55  |h pp. 1812-1821  |k n. 4  |p Phys Rev D Part Fields Gravit Cosmol  |x 15507998  |t Physical Review D - Particles, Fields, Gravitation and Cosmology 
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856 4 0 |u https://doi.org/10.1103/PhysRevD.55.1812  |y DOI 
856 4 0 |u https://hdl.handle.net/20.500.12110/paper_15507998_v55_n4_p1812_Calzetta  |y Handle 
856 4 0 |u https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v55_n4_p1812_Calzetta  |y Registro en la Biblioteca Digital 
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