Results 121 to 130 of about 20,263 (249)

Lepton number asymmetry via inflaton decay in a modified radiative seesaw model

Physics Letters B, 2015
We propose a non-thermal scenario for the generation of baryon number asymmetry in a radiative neutrino mass model which is modified to realize inflation at the early Universe.
Shoichi Kashiwase, Daijiro Suematsu
doaj   +1 more source

Gravitational effects on inflaton decay

Journal of Cosmology and Astroparticle Physics, 2015
18 pages, 2 figures; references added; version published on ...
Ema, Yohei, Jinno, Ryusuke, Mukaida, Kyohei, Nakayama, Kazunori   +3 more
openaire   +2 more sources

Grand Unification and Subcritical Hybrid Inflation

, 2014
We consider hybrid inflation for small couplings of the inflaton to matter such that the critical value of the inflaton field exceeds the Planck mass.
Buchmuller, Wilfried, Ishiwata, Koji
core   +1 more source

Coupling the Inflationary Sector to Matter

, 2016
We describe the coupling of matter fields to an inflationary sector of supergravity, the inflaton $\Phi$ and a stabilizer $S$, in models where the Kahler potential has a flat inflaton direction.
Kallosh, Renata, Linde, Andrei, Wrase, Timm   +2 more
core   +2 more sources

Plateau inflation in SUGRA-MSSM

Physics Letters B, 2016
We explored a Higgs inflationary scenario in the SUGRA embedding of the MSSM in Einstein frame where the inflaton is contained in the SU(2) Higgs doublet.
Girish Kumar Chakravarty, Gaveshna Gupta, Gaetano Lambiase, Subhendra Mohanty   +3 more
doaj   +1 more source

Induced-Gravity Inflation in no-Scale Supergravity and Beyond

, 2014
Supersymmetric versions of induced-gravity inflation are formulated within Supergravity (SUGRA) employing two gauge singlet chiral superfields. The proposed superpotential is uniquely determined by applying a continuous R and a discrete Z_n symmetry.
Pallis, C.
core   +1 more source

Dynamics of tachyonic preheating after hybrid inflation

, 2002
We study the instability of a scalar field at the end of hybrid inflation, using both analytical techniques and numerical simulations. We improve previous studies by taking the inflaton field fully into account, and show that the range of unstable modes ...
A. Kusenko, A. Rajantie, A. Rajantie, A. Rajantie, A. Rajantie, A.D. Dolgov, A.D. Linde, D. Boyanovsky, E. J. Copeland, E.J. Copeland, F. Cooper, F.C. Lombardo, G. Felder, G. Karra, G.N. Felder, I. Tkachev, I.I. Tkachev, J. Garcia-Bellido, J. Garcia-Bellido, J.H. Traschen, L. Kofman, L. Kofman, L.F. Abbott, L.M. Krauss, M. Hindmarsh, M. Hindmarsh, M.J. Bowick, N. Turok, N. Turok, S. Pascoli, S.Y. Khlebnikov, T. Asaka, T.W. Kibble, W.H. Zurek   +33 more
core   +1 more source

Reheating of the Universe as holographic thermalization

Physics Letters B, 2016
Assuming gauge/gravity correspondence we study reheating of the Universe using its holographic dual. Inflaton decay and thermalisation of the decay products correspond to collapse of a spherical shell and formation of a blackhole in the dual anti-de ...
Shinsuke Kawai, Yu Nakayama
doaj   +1 more source

Proposed physical mechanism that gives rise to cosmic inflation. [PDF]

Sci Rep, 2023
Law BM.
europepmc   +1 more source

Hillclimbing saddle point inflation

Physics Letters B, 2018
Recently a new inflationary scenario was proposed in [1] which can be applicable to an inflaton having multiple vacua. In this letter, we consider a more general situation where the inflaton potential has a (UV) saddle point around the Planck scale. This
Kiyoharu Kawana, Katsuta Sakai
doaj   +1 more source