Large tensor-to-scalar ratio from Composite Inflation

Abstract

The claimed detection of the BICEP2 experiment on the primordial B-mode of cosmic microwave background polarization suggests that cosmic inflation possibly takes place at the energy around the grand unified theory scale given a constraint on the tensor-to-scalar ratio. i.e., $r\simeq 0.20$. In this report, we revisit single-field (slow-roll) composite inflation and show that, with the proper choice of parameters and sizeable number of e-foldings, a large tensor-to-scalar ratio consistent with the recent BICEP2 results can be significantly produced with regard to the composite paradigms.

v3, 5 pages, 3 figures. text modified, misprints corrected, version matches the one accepted for publication by PRD. arXiv admin note: text overlap with arXiv:1307.2880

References in corpus (27)

• BICEP2 I: Detection Of B-mode Polarization at Degree Angular Scales
• On initial conditions for the Hot Big Bang
• Preheating in the Standard Model with the Higgs-Inflaton coupled to gravity
• Higgs inflation still alive
• A class of quintessential inflation models with parameter space consistent with BICEP2
• The large-N running of the spectral index of inflation
• Multi-Natural Inflation in Supergravity and BICEP2
• Embedding inflation into the Standard Model - more evidence for classical scale invariance
• Towards large r from [p,q]-inflation
• BICEP2 implications for single-field slow-roll inflation revisited
• Polynomial inflation models after BICEP2
• Remarks about the Tensor Mode Detection by the BICEP2 Collaboration and the Super-Planckian Excursions of the Inflaton Field
• Minimal Composite Inflation
• Composite Inflation Setup and Glueball Inflation
• Reheating of the universe after inflation with f(phi)R gravity
• Is Higgs Inflation Dead?
• The challenge for single field inflation with BICEP2 result
• Higgs Chaotic Inflation and the Primordial B-mode Polarization Discovered by BICEP2
• Dynamical Chaotic Inflation in the Light of BICEP2
• Starobinsky-Like Inflation in Dilaton-Brane Cosmology
• Holography of a Composite Inflaton
• Composite Inflation from Super Yang-Mills, Orientifold and One-Flavor QCD
• Inflation in a two 3-form fields scenario
• Composite Inflation confronts BICEP2 and PLANCK
• Does the BICEP2 Observation of Cosmological Tensor Modes Imply an Era of Nearly Planckian Energy Densities?
• Topological Inflation with Large Tensor-to-scalar Ratio
• BICEP2 constrains Composite Inflation

Cited by in corpus (7)

• Higgs inflation from Standard Model criticality
• Predictions on mass of Higgs portal scalar dark matter from Higgs inflation and flat potential
• Systematics of Constant Roll Inflation
• Strong Dynamics and Inflation: a review
• A Walking Dilaton Inflation
• De Sitter Space in Gauge/Gravity Duality
• Probing single-field inflation: predictions, constraints, and theoretical viewpoints