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arXiv · hep-ph/9808204

Does Inflationary Particle Production suggest Omega_m < 1?

Varun Sahni·Salman Habib
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Abstract

We study a class of FRW spacetimes with a nonminimally coupled light massive scalar field. Values of the coupling parameter xi<0 enhance long range power in the vacuum expectation value of the energy-momentum tensor and fundamentally alter the nature of inflationary particle production: the energy density of created particles behaves like an effective cosmological constant, leading generically to Omega_m < 1 in clustered matter and providing a possible resolution of the ``Omega problem'' for low density cosmological models.

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Varun Sahni, Salman Habib. 1998-08-02. Does Inflationary Particle Production suggest Omega_m < 1?. https://doi.org/10.1103/physrevlett.81.1766

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