INVESTIGADORES
MOLLERACH Maria Silvia
artículos
Título:
Blue perturbation spectra from inflation
Autor/es:
S. MOLLERACH; S. MATARRESE; F. LUCCHIN
Revista:
PHYSICAL REVIEW D - PARTICLE AND FILDS
Editorial:
American Physical Society
Referencias:
Año: 1994 vol. 50 p. 4835 - 4841
ISSN:
0556-2821
Resumen:
It is generally believed that inflationary models for the origin of
primordial density perturbations predict a spectral index n<=1.
However, some observations, such as the first two years of COBE data,
the Tenerife temperature anisotopy detection, bulk motions, and
structures on the ~50h-1 Mpc scale, have recently aroused
much interest in spectral indices n>1 (``blue spectra''). We show
that there is a class of inflationary models leading to this kind of
spectra: they are produced while the inflaton field rolls down to a
potential minimum with the potential energy dominated by a
cosmological-constant-like piece.
