Abstract:
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.
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Citas:
---------- APA ----------
Calzetta, E.A. & Gonorazky, S.
(1997)
. Primordial fluctuations from nonlinear couplings. Physical Review D - Particles, Fields, Gravitation and Cosmology, 55(4), 1812-1821.
http://dx.doi.org/10.1103/PhysRevD.55.1812---------- CHICAGO ----------
Calzetta, E.A., Gonorazky, S.
"Primordial fluctuations from nonlinear couplings"
. Physical Review D - Particles, Fields, Gravitation and Cosmology 55, no. 4
(1997) : 1812-1821.
http://dx.doi.org/10.1103/PhysRevD.55.1812---------- MLA ----------
Calzetta, E.A., Gonorazky, S.
"Primordial fluctuations from nonlinear couplings"
. Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 55, no. 4, 1997, pp. 1812-1821.
http://dx.doi.org/10.1103/PhysRevD.55.1812---------- VANCOUVER ----------
Calzetta, E.A., Gonorazky, S. Primordial fluctuations from nonlinear couplings. Phys Rev D Part Fields Gravit Cosmol. 1997;55(4):1812-1821.
http://dx.doi.org/10.1103/PhysRevD.55.1812