Isocurvature fluctuations in the effective Newton’s constant
Sign Up to like & getrecommendations! Published in 2019 at "Physics of the Dark Universe"
DOI: 10.1016/j.dark.2019.100307
Abstract: We present a new isocurvature mode present in scalar-tensor theories of gravity that corresponds to a regular growing solution in which the energy of the relativistic degrees of freedom and the scalar field that regulates… read more here.
Keywords: effective newton; fluctuations effective; isocurvature mode; isocurvature ... See more keywords
Shift-symmetric orbital inflation: Single field or multifield?
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.102.021302
Abstract: We present a new class of two-field inflationary attractor models, known as `shift-symmetric orbital inflation', whose behaviour is strongly multi-field but whose predictions are remarkably close to those of single-field inflation. In these models, the… read more here.
Keywords: field; single field; inflation; symmetric orbital ... See more keywords