Small Field Coleman-Weinberg Inflation driven by Fermion Condensate

Abstract

We revisit the small field Coleman-Weinberg (CW) inflation, which has the following two problems. First, the smallness of the slow roll parameter $\epsilon$ requires the inflation scale to be very low. Second, the spectral index $n_s\approx 1+2\eta$ tends to become smaller compared to the observed value. In this letter, we consider two possible effects on the dynamics of inflation: radiatively generated non-minimal coupling to gravity $\xi {\varphi }^2\mathcal{R}$ and condensation of fermions coupled to the inflaton as $\varphi \bar{\psi }\psi$. We show that the fermion condenate can solve the above problems.

arXiv comment5 pages, 2 figures; references and a discussion on the reheating temperature added, version published in PRD

References in corpus (17)

• Planck 2013 results. XVI. Cosmological parameters
• Classically Conformal B-L extended Standard Model
• Agravity
• The minimal B-L model naturally realized at TeV scale
• Spacetime curvature and the Higgs stability during inflation
• Physical Naturalness and Dynamical Breaking of Classical Scale Invariance
• A modified naturalness principle and its experimental tests
• A Renormalisation Group Equation Study of the Scalar Sector of the Minimal B-L Extension of the Standard Model
• Revisiting the Naturalness Problem -- Who is afraid of quadratic divergences? --
• Is the Higgs Boson Associated with Coleman-Weinberg Dynamical Symmetry Breaking?
• Coleman-Weinberg Inflation in light of Planck
• Precise Measurements of Primordial Power Spectrum with 21 cm Fluctuations
• New inflation in supergravity after Planck and LHC
• PeV-scale Supersymmetry from New Inflation
• Does Planck really rule out monomial inflation?
• Baryogenesis from a right-handed neutrino condensate
• Power suppression from disparate mass scales in effective scalar field theories of inflation and quintessence

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• Classically Scale Invariant Inflation, Supermassive WIMPs, and Adimensional Gravity
• Monopoles, Strings and Gravitational Waves in Non-minimal Inflation
• Inflationary predictions of double-well, Coleman-Weinberg, and hilltop potentials with non-minimal coupling
• Weyl Symmetry Inspired Inflation and Dark Matter
• Asymmetric Dark Matter, Inflation and Leptogenesis from B-L Symmetry Breaking
• Gauged Nambu-Jona-Lasinio inflation
• Inflation in gauge theory of gravity with local scaling symmetry and quantum induced symmetry breaking
• A Walking Dilaton Inflation
• Primordial Black Holes and Scalar-induced Gravitational Waves in Radiative Hybrid Inflation
• Composite Hybrid Inflation: Dilaton and Waterfall Pions
• Inflection-point Inflation and Dark Matter Redux
• Very low scale Coleman-Weinberg inflation with non-minimal coupling
• Dynamical fine-tuning of initial conditions for small field inflations
• Dynamical realization of the small field inflation of Coleman-Weinberg type in the post supercooled universe
• Walking-dilaton hybrid inflation with $B-L$ Higgs embedded in dynamical scalegenesis
• Gravitational wave footprints from Higgs-portal scalegenesis with multiple dark chiral scalars
• Slow-roll corrections in multi-field inflation: a separate universes approach