Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-05-08
Abstract: We discuss a class of matrix models describing cosmology with a light-like singularity, generalizing the model proposed by Craps et al. in hep-th/0506180.
Peer Review Status:Awaiting Review
Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-05-08
Abstract: We study a class of models in which the inflaton is minimally coupled to gravity with a term爁(R)phiv2. We focus in particular on the case where爁~R2, and the expansion of the scale factor is driven by the usual potential energy, while the rolling of the inflaton is driven by the non-minimal coupling. We show that the power spectrum is in general blue, and the problem of getting a running spectral index is eased. However, the inflaton potential must have a large second derivative in order to get a large running.
Peer Review Status:Awaiting Review
Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-05-08
Abstract: We investigate爐he爉easure爌roblem in爐he爁ramework of inflationary cosmology.燭he爉easure爋f爐he爃istory space is constructed and applied to爄nflationmodels. Using this爉easure, it is shown that爐he爌robability爁or爐he爂eneralized single-field slow roll爄nflation爐o last爁or燦 e-folds is suppressed by a factor exp(-3N), and爐he爌robability爁or爐he爂eneralized n-field slow roll爄nflation爄s suppressed by a much larger factor, exp(-3nN). Some non-inflationary models such as爐he燾yclic model do not suffer from this difficulty.
Peer Review Status:Awaiting Review
Subjects: Physics >> Interdisciplinary Physics and Related Areas of Science and Technology submitted time 2016-05-08
Abstract: Cell cycle;燫eplication initiation;燙ell growth;燚naA;燫NA polymerase
Peer Review Status:Awaiting Review