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Intermediate inflation in light of the three-year WMAP observations

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journal contribution
posted on 2023-06-07, 19:44 authored by John D Barrow, Andrew R Liddle, Cedric Pahud
The three-year observations from the Wilkinson Microwave Anisotropy Probe have been hailed as giving the first clear indication of a spectral index ns<1. We point out that the data are equally well explained by retaining the assumption ns=1 and allowing the tensor-to-scalar ratio r to be nonzero. The combination ns=1 and r>0 is given (within the slow-roll approximation) by a version of the intermediate inflation model with expansion rate H(t)?t-1/3. We assess the status of this model in light of the WMAP3 data.

History

Publication status

  • Published

File Version

  • Published version

Journal

Physical Review D

ISSN

1550-7998

Publisher

American Physical Society

Issue

12

Volume

74

Page range

127305

Department affiliated with

  • Physics and Astronomy Publications

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

2016-11-10

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