scholarly journals Kinetically modified nonminimal chaotic inflation

2015 ◽  
Vol 91 (12) ◽  
Author(s):  
Constantinos Pallis
Keyword(s):  
Chaotic Inflation

scholarly journals CHAOTIC INFLATION ON THE RANDALL–SUNDRUM TWO-BRANE MODEL

2010 ◽  
Vol 25 (31) ◽  
pp. 2697-2713
Author(s):  
KOUROSH NOZARI ◽  
SIAMAK AKHSHABI
Keyword(s):  
Scalar Field ◽  
Field Potential ◽  
Friedmann Equation ◽  
Warp Factor ◽  
Model Parameters ◽  
Stabilization Mechanism ◽  
Brane Model ◽  
Inflation Model ◽  
Bulk Scalar Field ◽  
Chaotic Inflation

We construct an inflation model on the Randall–Sundrum I (RSI) brane where a bulk scalar field stabilizes the inter-brane separation. We study impact of the bulk scalar field on the inflationary dynamics on the brane. We proceed in two different approaches: in the first approach, the stabilizing field potential is directly appeared in the Friedmann equation and the resulting scenario is effectively a two-field inflation. In the second approach, the stabilization mechanism is considered in the context of a warp factor so that there is just one field present that plays the roles of both inflaton and stabilizer. We study constraints imposed on the model parameters from recent observations.

scholarly journals Sneutrino chaotic inflation and landscape

2014 ◽  
Vol 738 ◽  
pp. 196-200 ◽  
Author(s):  
Hitoshi Murayama ◽  
Kazunori Nakayama ◽  
Fuminobu Takahashi ◽  
Tsutomu T. Yanagida
Keyword(s):  
Chaotic Inflation

scholarly journals Quadratic chaotic inflation with a logarithmic-corrected mass

2018 ◽  
Vol 98 (12) ◽  
Author(s):  
Shinta Kasuya ◽  
Mayuko Taira
Keyword(s):  
Chaotic Inflation

scholarly journals Lower bound of the tensor-to-scalar ratior≳0.1in a nearly quadratic chaotic inflation model in supergravity

2015 ◽  
Vol 741 ◽  
pp. 267-271 ◽  
Author(s):  
Keisuke Harigaya ◽  
Masahiro Kawasaki ◽  
Tsutomu T. Yanagida
Keyword(s):  
Lower Bound ◽  
Inflation Model ◽  
Chaotic Inflation

Generation of non-Gaussian fluctuations during chaotic inflation

1991 ◽  
Vol 43 (2) ◽  
pp. 362-368 ◽  
Author(s):  
Insu Yi ◽  
Ethan T. Vishniac ◽  
Shin Mineshige
Keyword(s):  
Gaussian Fluctuations ◽  
Non Gaussian ◽  
Chaotic Inflation

scholarly journals Generalized Galileon scenario inspires chaotic inflation

2019 ◽  
Vol 79 (10) ◽  
Author(s):  
Matías López ◽  
Jorge Maggiolo ◽  
Nelson Videla ◽  
Pablo González ◽  
Grigoris Panotopoulos
Keyword(s):  
General Relativity ◽  
Observational Data ◽  
Kinetic Term ◽  
Cosmological Perturbations ◽  
Slow Roll ◽  
Field Oscillation ◽  
General Conditions ◽  
Chaotic Inflation

Abstract We study chaotic inflation with a Galileon-like self-interaction $$G(\phi ,X)\Box \phi $$G(ϕ,X)□ϕ, where $$G(\phi ,X)\propto X^{n}$$G(ϕ,X)∝Xn. General conditions required for successful inflation are deduced and discussed from the background and cosmological perturbations under slow-roll approximation. Interestingly, it is found that in the regime where the Galileon term dominates over the standard kinetic term, the tensor-to-scalar ratio becomes significantly suppressed in comparison to the standard expression in General Relativity (GR). Particularly, we find the allowed range in the space of parameters characterizing the chaotic quadratic and quartic inflation models by considering the current observational data of Planck from the $$n_{\mathcal {S}}-r$$nS-r plane. Finally, we discuss about the issue if the Galileon term is dominant by the end of inflation, this can affect the field oscillation during reheating.

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