scholarly journals Natural hybrid inflation model with large non-Gaussianity

2012 ◽  
Vol 706 (4-5) ◽  
pp. 243-250 ◽  
Author(s):  
Ki-Young Choi ◽  
Bumseok Kyae
Keyword(s):  
Natural Hybrid ◽  
Inflation Model ◽  
Hybrid Inflation

scholarly journals LARGE NON-GAUSSIANITY FROM MULTI-BRID INFLATION

2011 ◽  
Vol 01 ◽  
pp. 108-113
Author(s):  
ATSUSHI NARUKO ◽  
MISAO SASAKI
Keyword(s):  
Scalar Field ◽  
General Feature ◽  
Present Model ◽  
The Other ◽  
Model Parameters ◽  
Exponential Potential ◽  
Inflation Model ◽  
Hybrid Inflation ◽  
Non Gaussian ◽  
Near Future

A model of multi-component hybrid inflation, dubbed multi-brid inflation, which may yield a large non-Gaussian paramter fNL, was proposed recently. In particular, for a two-brid inflation model with an exponential potential and the condition that the end of inflation is an ellipse in the field space, it was found that, while keeping the other observational quantities within the range consistent with observations, large non-Gaussianity is possible for certain inflationary trajectories. In this talk, in order to see if this result is a general feature of multi-brid inflation, we consider a model with a potential with an exponent quadratic in the scalar field components. We also consider a more general class of ellipses for the end of inflation. Focusing on the case of two-brid inflation, we find that large non-Gaussianity is also possible in the present model. Then by tuning the model parameters, we find that there exist models for which both the non-Gaussianity and the tensor-to-scalar ratio are large enough to be detected in the very near future.

scholarly journals Two-field axion-monodromy hybrid inflation model: Dante’s Waterfall

2015 ◽  
Vol 91 (4) ◽  
Author(s):  
Christopher D. Carone ◽  
Joshua Erlich ◽  
Anuraag Sensharma ◽  
Zhen Wang
Keyword(s):  
Inflation Model ◽  
Hybrid Inflation

scholarly journals supersymmetry in a hybrid inflation model

2001 ◽  
Vol 499 (3-4) ◽  
pp. 297-304 ◽  
Author(s):  
T. Watari ◽  
T. Yanagida
Keyword(s):  
Inflation Model ◽  
Hybrid Inflation

Smooth hybrid inflation on brane constrained by Planck data

2014 ◽  
Vol 29 (26) ◽  
pp. 1450146 ◽  
Author(s):  
M. Ferricha-Alami ◽  
H. Chakir ◽  
J. Inchaouh ◽  
M. Bennai
Keyword(s):  
Spectral Index ◽  
Index Formula ◽  
Type Ii ◽  
Planck Data ◽  
Inflation Model ◽  
Scalar Spectral Index ◽  
Central Value ◽  
Hybrid Inflation ◽  
Kähler Potential ◽  
Braneworld Model

It is shown that, in the supersymmetric smooth hybrid inflation model with the minimal Kähler potential, the spectral index ns is larger than 0.97 in the standard inflation. In this context, we study the smooth hybrid inflationary model in the framework of the Randall–Sundrum type-II braneworld model. We derive all known inflationary spectrum parameters which are widely consistent with Planck data for a particular choice of brane tension values λ especially for number of e-folds N = 50. We reproduce the central value of the scalar spectral index ns = 0.96 whereas the ratio r~(10-4-10-3). However, the running of the scalar spectral index [Formula: see text] is not excluded from the range given by the latest observational measurements.

scholarly journals Supergravity analysis of the hybrid inflation model from a D3-D7 system

2004 ◽  
Vol 69 (10) ◽  
Author(s):  
Fumikazu Koyama ◽  
Yuji Tachikawa ◽  
Taizan Watari
Keyword(s):  
Inflation Model ◽  
Hybrid Inflation

scholarly journals Gravity waves and proton decay in a flipped SU(5) hybrid inflation model

2018 ◽  
Vol 97 (12) ◽  
Author(s):  
Mansoor Ur Rehman ◽  
Qaisar Shafi ◽  
Umer Zubair
Keyword(s):  
Gravity Waves ◽  
Proton Decay ◽  
Inflation Model ◽  
Hybrid Inflation

scholarly journals A viable D-term hybrid inflation model

2017 ◽  
Vol 2017 (11) ◽  
pp. 033-033 ◽  
Author(s):  
Kenji Kadota ◽  
Tatsuo Kobayashi ◽  
Keigo Sumita
Keyword(s):  
Inflation Model ◽  
Hybrid Inflation
Sign in / Sign up

Export Citation Format

Share Document