Stability of multifield cosmological solutions in the presence of a fluid

Frazer, Jonathan and Liddle, Andrew R (2010) Stability of multifield cosmological solutions in the presence of a fluid. Physical Review D, 82 (4). ISSN 1550-7998

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Abstract

We explore the stability properties of multifield solutions in the presence of a perfect fluid, as appropriate to assisted quintessence scenarios. We show that the stability condition for multiple fields phi(i) in identical potentials V-i is simply d(2)V(i)/d phi(2)(i) > 0, exactly as in the absence of a fluid. A possible new instability associated with the fluid is shown not to arise in situations of cosmological interest.

Item Type: Article
Additional Information: Article Number: 043516
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User: Jonathan Frazer
Date Deposited: 06 Feb 2012 19:47
Last Modified: 13 Mar 2017 23:54
URI: http://sro.sussex.ac.uk/id/eprint/22162

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