Results 231 to 240 of about 20,263 (249)

Cosmic inflation without inflaton

International Journal of Modern Physics D, 2019
We propose a novel explanation for universe’s inflationary period. We argue that when the Einstein–Hilbert action is supplemented by an infinite tower of higher-curvature terms — selected order by order by the criterium that they give rise to a well-posed cosmological evolution — the usual Big Bang characteristic of Einstein gravity is replaced by a ...
Arciniega, Gustavo, Bueno, Pablo, Cano, Pablo A., Edelstein, José D., Hennigar, Robie A., Jaime, Luisa G.   +5 more
openaire   +2 more sources

Light dark matter from inflaton decay

Journal of High Energy Physics, 2021
Takeo Moroi, Wen Yin
exaly  

Light Inflaton Hypothesis

A light inflaton-like state on a 5D-brane, with mass  3.65 TeV. 
openaire   +1 more source

Primordial black holes arise when the inflaton falls

Physical Review D, 2021
Keisuke Inomata, Evan McDonough
exaly  

One small step for an inflaton, one giant leap for inflation: A novel non-Gaussian tail and primordial black holes

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2022
Zihan Zhou
exaly  

Modified teleparallel gravity: Inflation without an inflaton

Physical Review D, 2007
Rafael Ferraro, Franco Fiorini
exaly  

Primordial black holes from inflaton fragmentation into oscillons

Physical Review D, 2018
Alexander Kusenko, Volodymyr Takhistov
exaly  

Gauge singlet scalar as inflaton and thermal relic dark matter

Physical Review D, 2009
John McDonald
exaly  

Gravity waves and non-Gaussian features from particle production in a sector gravitationally coupled to the inflaton

Physical Review D, 2012
Marco Peloso, Gary Shiu
exaly  

A geometrical upper bound on the inflaton range

Journal of High Energy Physics, 2018
Michele Cicoli, Christoph Mayrhofer, Pramod Shukla   +2 more
exaly