Results 101 to 110 of about 20,263 (249)
The inflaton portal to dark matter
Journal of High Energy Physics, 2017 We consider the possibility that the inflaton is part of the dark sector and interacts with the standard model through a portal interaction with a heavy complex scalar field in equilibrium with the standard model at high energies.
Lucien Heurtier
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Fate of Electroweak Vacuum during Preheating
, 2016 Our electroweak vacuum may be metastable in light of the current experimental data of the Higgs/top quark mass. If this is really the case, high-scale inflation models require a stabilization mechanism of our vacuum during inflation. A possible candidate
Ema, Yohei +2 more
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Pre-thermalized gravitational waves
Journal of High Energy PhysicsWe investigate a novel gravitational wave (GW) production mechanism from gravitons generated during the pre-thermal phase of cosmic reheating, where the energy density is dominated by non-thermalized inflaton decay products, dubbed reheatons. We consider
Nicolás Bernal +3 more
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Inflation with Massive Vector Fields
, 2015 We investigate the coupling between the inflaton and massive vector fields. All renormalizable couplings with shift symmetry of the inflaton are considered. The massive vector can be decomposed into a scalar mode and a divergence-free vector mode.
Liu, Junyu, Wang, Yi, Zhou, Siyi
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Primordial black holes and scalar-induced gravitational waves from the perturbations on the inflaton potential in peak theory [PDF]
, 2023 Ji-Xiang Zhao, Xiaohui Liu, Nan Li
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Towards universal axion inflation and reheating in string theory
Physics Letters B, 2014 The recent BICEP2 measurements of B-modes indicate a large tensor-to-scalar ratio in inflationary cosmology, which points towards trans-Planckian evolution of the inflaton. We propose possible string-theory realizations thereof.
Ralph Blumenhagen, Erik Plauschinn
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Alchemical inflation: inflaton turns into Higgs [PDF]
Journal of Cosmology and Astroparticle Physics, 2012 We propose a new inflation model in which a gauge singlet inflaton turns into the Higgs condensate after inflation. The inflationary path is characterized by a moduli space of supersymmetric vacua spanned by the inflaton and Higgs field. The inflation energy scale is related to the soft supersymmetry breaking, and the Hubble parameter during inflation ...
Nakayama, Kazunori, Takahashi, Fuminobu
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Calculations of Inflaton Decays and Reheating: with Applications to No-Scale Inflation Models
, 2015 We discuss inflaton decays and reheating in no-scale Starobinsky-like models of inflation, calculating the effective equation-of-state parameter, $w$, during the epoch of inflaton decay, the reheating temperature, $T_{\rm reh}$, and the number of ...
Ellis, John +3 more
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Nonlinear inflaton fragmentation after preheating
Physical Review D, 2007 9 pages, 6 ...
Felder, Gary, Kofman, Lev
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Chaotic Inflation based on an Abelian D-flat Direction
, 1995 We study the inflation due to the D-flat direction of an extra $U(1)$. This scenario is a hybrid of a right-handed sneutrino inflaton scenario and a gauge non-singlet inflaton scenario.
Suematsu, Daijiro, Yamagishi, Yoshio
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