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Affleck-Dine condensate, late thermalization and the gravitino problem

Allahverdi, Rouzbeh and Mazumdar, Anupam (2008) Affleck-Dine condensate, late thermalization and the gravitino problem. Physical Review D, 78 (4). ISSN 1550-7998

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Abstract

In this clarifying note we discuss the late decay of an Affleck-Dine condensate by providing a no-go theorem that attributes to conserved global charges which are identified by the net particle number in fields which are included in the flat direction(s). For a rotating condensate, this implies that: (1) the net baryon/lepton number density stored in the condensate is always conserved, and (2) the total particle number density in the condensate cannot decrease. This reiterates that, irrespective of possible non-perturbative particle production due to $D$-terms in a multiple flat direction case, the prime decay mode of an Affleck-Dine condensate will be perturbative as originally envisaged. As a result, cosmological consequences of flat directions such as delayed thermalization as a novel solution to the gravitino overproduction problem will remain virtually intact.

Item Type: Article
Journal or Publication Title: Physical Review D
Additional Information: 10 pages. Clarifying comments added, final version accepted for publication in Phys. Rev. D
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 31510
Deposited By: Dr Anupam Mazumdar
Deposited On: 27 Jan 2010 16:23
Refereed?: Yes
Published?: Published
Last Modified: 17 Nov 2017 10:19
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/31510

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