Padmanabhan, T. ; Seshadri, T. R. (1986) Probing the origin of large inhomogeneities in inflation using a toy quantum mechanical model Physical Review D - Particles, Fields, Gravitation and Cosmology, 34 (4). pp. 951-958. ISSN 1550-7998
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Official URL: http://prd.aps.org/abstract/PRD/v34/i4/p951_1
Related URL: http://dx.doi.org/10.1103/PhysRevD.34.951
Abstract
We study the quantum evolution of the homogeneous mode of a scalar field with simple potentials in Robertson-Walker spacetime. The simplicity of the model allows one to work out the exact quantum evolution of a wave packet. The model mimics the inflationary scenario quite well and is used to study the nature and origin of various constraints. We conclude that any model in which (i) the potential has only a single energy scale (1014-1015 GeV) and dimensionless parameters of order unity and (ii) the inflationary phase is endowed with a minimum temperature of (H/2π) will produce density inhomogeneity which is too large.
Item Type: | Article |
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Source: | Copyright of this article belongs to The American Physical Society. |
ID Code: | 72432 |
Deposited On: | 29 Nov 2011 05:14 |
Last Modified: | 29 Nov 2011 05:14 |
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