Results 11 to 20 of about 20,263 (249)
Journal of High Energy Physics, 2004 We investigate a new mechanism for realizing slow roll inflation in string theory, based on the dynamics of p anti-D3 branes in a class of mildly warped flux compactifications.
A. Buchel +31 more
core +5 more sources
Gravitino Problem in Inflation Driven by Inflaton-Polonyi K\"ahler Coupling
Physics Letters B, 2017 We discuss the cosmological gravitino problem in inflation models in which the inflaton potential is constructed from K\"ahler potential rather than superpotential: a representative model is $\overline{\text{D}3}$-induced geometric inflation.
Hasegawa, Fuminori +3 more
core +4 more sources
Strongly Coupled Inflaton [PDF]
Journal of Cosmology and Astroparticle Physics, 2011 We continue to investigate properties of the strongly coupled inflaton in a setup introduced in arXiv:0807.3191 through the AdS/CFT correspondence. These properties are qualitatively different from those in conventional inflationary models.
E. Witten +5 more
core +2 more sources
When Does the Inflaton Decay? [PDF]
Journal of Cosmology and Astroparticle Physics, 2017 In order for the inflaton to decay into radiation at the end of inflation, it needs to couple to light matter fields. In this article we determine whether such couplings cause the inflaton to decay during inflation rather than after it.
Armendariz-Picon, C.
core +2 more sources
Axion monodromy inflation, trapping mechanisms and the swampland. [PDF]
Eur Phys J C Part Fields, 2021 We study the effects of particle production on the evolution of the inflaton field in an axion monodromy model with the goal of discovering in which situations the resulting dynamics will be consistent with the swampland constraints. In the presence of a
Jin W, Brandenberger R, Heisenberg L.
europepmc +2 more sources
Physical Review ResearchWe propose a novel scenario in which scalar perturbations, which seed the large-scale structure of the universe, are generated without relying on a scalar field (the inflaton).
Daniele Bertacca +3 more
doaj +5 more sources
Inflaton as a pseudo-Nambu-Goldstone boson
Physics Letters B, 2023 In the realistic model of cosmic inflation the inflaton potential should be flat and stable under quantum corrections. It is natural to imagine that there is some symmetry behind and an idea of the inflaton as a Nambu-Goldstone boson of spontaneous ...
Noriaki Kitazawa
openalex +3 more sources
Spontaneous baryogenesis from asymmetric inflaton
Physics Letters B, 2016 We propose a variant scenario of spontaneous baryogenesis from asymmetric inflaton based on current–current interactions between the inflaton and matter fields with a non-zero B−L charge.
Fuminobu Takahashi, Masaki Yamada
doaj +6 more sources
Higgs–inflaton mixing and vacuum stability
Physics Letters B, 2019 The quartic and trilinear Higgs field couplings to an additional real scalar are renormalizable, gauge and Lorentz invariant. Thus, on general grounds, one expects such couplings between the Higgs and an inflaton in quantum field theory. We find that the
Yohei Ema +4 more
doaj +5 more sources
Baryogenesis from the inflaton field
Physics Letters B, 2014 In this letter we show that the inflaton can generate the cosmological baryon asymmetry. We take the inflaton to be a complex scalar field with a weakly broken global symmetry and develop a new variant on the Affleck–Dine mechanism.
Mark P. Hertzberg, Johanna Karouby
doaj +5 more sources