Primordial Density Fluctuations in a Dual Supergravity Cosmology

Details Primordial Density Fluctuations in a Dual Supergravity Cosmology Primordial Density Fluctuations in a Dual Supergravity Cosmology

1998-01-20

arxiv.org/abs/gr-qc/9801065v1

Phys.Lett. B427 (1998) 261-266

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

13 pages, Latex, 3 figures (uses epsf.sty)

Scientific paper

10.1016/S0370-2693(98)00218-4

We analyse the spectrum of energy density fluctuations of a dual supergravity model where the dilaton and the moduli are stabilized and sucessful inflation is achieved inside domain walls that separate different vacua of the theory. Constraints on the parameters of the superpotential are derived from the amplitude of the primordial energy density fluctuations as inferred from COBE and it is shown that the scale dependence of the tensor perturbations nearly vanishes.

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