Inflation with a Weyl term, or ghosts at work
作者： Nathalie Deruelle , Misao Sasaki , Yuuiti Sendouda , Ahmed Youssef
DOI: 10.1088/1475-7516/2011/03/040
关键词:
摘要: In order to assess the role of ghosts in cosmology, we study evolution linear cosmological perturbations during inflation when a Weyl term is added action. Our main results are that vector can no longer be ignored and scalar modes diverge newtonian gauge but remain bounded comoving slicing.
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