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Stability of multifield cosmological solutions in the presence of a fluid

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posted on 2023-06-08, 00:00 authored by Jonathan Frazer, Andrew R Liddle
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.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D

ISSN

1550-7998

Publisher

American Physical Society

Issue

4

Volume

82

Department affiliated with

  • Physics and Astronomy Publications

Notes

Article Number: 043516

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2012-02-06

First Open Access (FOA) Date

2016-03-22

First Compliant Deposit (FCD) Date

2017-03-13

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