Thursday, July 19, 2012

1207.4353 (Michal Artymowski et al.)

Inflation from non-minimally coupled scalar field in loop quantum
cosmology
   [PDF]

Michal Artymowski, Andrea Dapor, Tomasz Pawlowski
The FRW model with non-minimally coupled massive scalar field has been investigated in LQC framework. Considered form of the potential and coupling allows applications to Higgs driven inflation. The resulting dynamics qualitatively modifies the standard bounce paradigm in LQC in two ways: (i) the bounce point is no longer marked by critical matter energy density, (ii) the Planck scale physics features the "mexican hat" trajectory with two consecutive bounces and rapid expansion and recollapse between them. Furthermore, for physically viable coupling strength and initial data the subsequent inflation exceeds 60 e-foldings.
View original: http://arxiv.org/abs/1207.4353

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