Publication: Inflation from Minkowski space
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Issued Date
2014
Resource Type
File Type
application/pdf
ISSN
10298479
Other identifier(s)
2-s2.0-84920465075
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Journal of High Energy Physics. Vol 2014, No.12 (2014), p.1-32
Suggested Citation
Pirtskhalava D., Santoni L., Trincherini E., Uttayarat P. Inflation from Minkowski space. Journal of High Energy Physics. Vol 2014, No.12 (2014), p.1-32. doi:10.1007/JHEP12(2014)151 Retrieved from: https://hdl.handle.net/20.500.14740/6743
Author(s)
Abstract
Abstract: We propose a class of scalar models that, once coupled to gravity, lead to cosmologies that smoothly and stably connect an inflationary quasi-de Sitter universe to a low, or even zero-curvature, maximally symmetric spacetime in the asymptotic past, strongly violating the null energy condition (H = H2) at intermediate times. The models are deformations of the conformal galileon lagrangian and are therefore based on symmetries, both exact and approximate, that ensure the quantum robustness of the whole picture. The resulting cosmological backgrounds can be viewed as regularized extensions of the galilean genesis scenario, or, equivalently, as ‘early-time-complete’ realizations of inflation. The late-time inflationary dynamics possesses phenomenologically interesting properties: it can produce a large tensor-to-scalar ratio within the regime of validity of the effective field theory and can lead to sizeable equilateral nongaussianities. © 2014, The Author(s).