Results 111 to 120 of about 19,573 (204)

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

Lower bound of the tensor-to-scalar ratio r≳0.1 in a nearly quadratic chaotic inflation model in supergravity

Physics Letters B, 2015
We consider an initial condition problem in a nearly quadratic chaotic inflation model in supergravity. We introduce shift symmetry breaking not only in the superpotential but also in the Kahler potential.
Keisuke Harigaya, Masahiro Kawasaki, Tsutomu T. Yanagida   +2 more
doaj   +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

Higher order terms in the inflaton potential and the lower bound on the tensor to scalar ratio r

, 2009
The MCMC analysis of the CMB+LSS data in the context of the Ginsburg-Landau approach to inflation indicated that the fourth degree double--well inflaton potential best fits the present CMB and LSS data.
Alabidi, Alabidi, Boubekeur, Boyanovsky, Boyanovsky, Boyanovsky, Boyanovsky, Boyanovsky, Boyanovsky, Boyanovsky, Boyle, Bridges, Burigana, C. Destri, Chen, Cirigliano, Destri, Dodelson, Easther, Easther, Eriksen, Finelli, Ginsburg, Ginsburg, Ginsburg, H.J. de Vega, Hinshaw, Hoffman, Hu, Huffenberger, Huffenberger, Kadota, Kinney, Kinney, Kinney, Kinney, Kohri, Kolb, Komatsu, Kosowsky, Landau, Landau, Lidsey, Lifshitz, Lin, Lyth, N.G. Sanchez, Nolta, Peiris, Powel, Ramirez, Savage, Spalinski   +52 more
core   +3 more sources

Gravitational Radiation from Preheating with Many Fields

, 2010
Parametric resonances provide a mechanism by which particles can be created just after inflation. Thus far, attention has focused on a single or many inflaton fields coupled to a single scalar field.
A.A. Starobinsky, A.A. Starobinsky, C.W. Misner, H. Bateman, J. Braden, J. García-Bellido, J.F. Dufaux, John T Giblin, Larry R Price, R. Easther, Xavier Siemens   +10 more
core   +1 more source

Universe Reheating after Inflation

, 1994
We study the problem of scalar particle production after inflation by a rapidly oscillating inflaton field. We use the framework of the chaotic inflation scenario with quartic and quadratic inflaton potentials.
A. Albrecht, A. Dolgov, A. Dolgov, A. Hosoya, A. Linde, A. Starobinsky, D. Boyanovsky, D. Nanopoulos, E. Kolb, J. Traschen, J. Traschen, L. Abbott, L. Kofman, M. Morikawa, N. Bogoliubov, R. Brandenberger, Y. Shtanov, Y. Shtanov   +17 more
core   +1 more source

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

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

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

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

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