RT Journal Article
T1 Geometric inflation
A1 Arciniega, Gustavo
A1 Bueno, Pablo
A1 Cano, Pablo A.
A1 Edelstein Glaubach, José Daniel
A1 Hennigar, Robie A.
A1 Jaime, Luisa G.
AB We argue that the presence of an inflationary epoch is a natural, almost unavoidable, consequence of the existence of a sensible action involving an infinite tower of higher-curvature corrections to the Einstein-Hilbert action. No additional fields besides the metric are required. We show that a family of such corrections giving rise to a well-posed cosmological evolution exists and automatically replaces the radiation-dominated early-universe Big Bang by a period of exponential growth of the scale factor, which is gracefully connected with standard late-time ΛCDM cosmology. The class of higher-curvature theories giving rise to sensible cosmological evolution share additional remarkable properties such as the existence of Schwarzschild-like non-hairy black holes, or the fact that, just like for Einstein gravity, the only degrees of freedom propagated on the vacuum are those of the standard graviton.
PB Elsevier
SN 0370-2693
YR 2020
FD 2020-01-22
LK http://hdl.handle.net/10347/21871
UL http://hdl.handle.net/10347/21871
LA eng
NO Gustavo Arciniega, Pablo Bueno, Pablo A. Cano, José D. Edelstein, Robie A. Hennigar, Luisa G. Jaime, Geometric inflation, Physics Letters B, Volume 802, 2020, 135242, ISSN 0370-2693, https://doi.org/10.1016/j.physletb.2020.135242
NO GA acknowledges the support of the CONACYT postdoctoral fellowship. The work of PB was supported by the Simons Foundation through the It From Qubit Simons collaboration. The work of PAC is funded by Fundación Caixa through a “la Caixa - Severo Ochoa” International pre-doctoral grant and partially by the MINECO/FEDER, UE grant FPA2015-66793-P, and the “Centro de Excelencia Severo Ochoa” Program grant SEV-2016-0597. The work of JDE is supported by MINECO FPA2014-52218 and FPA2017-84436-P, Xunta de Galicia ED431C 2017/07, FEDER, and the María de Maeztu Unit of Excellence MDM-2016-0692. The work of RAH is supported by the Natural Sciences and Engineering Research Council of Canada through the Banting Postdoctoral Fellowship programme
DS Minerva
RD 24 abr 2026