Cosmic inflation from broken conformal symmetry

Abstract

A period of rapidly accelerating expansion is expected in the early Universe implemented by a scalar field slowly rolling down along an asymptotically flat potential preferred by the current data. In this paper, we point out that this picture of the cosmic inflation with an asymptotically flat potential could emerge from the Palatini quadratic gravity by adding the matter field in such a way to break the local gauged conformal symmetry in both kinetic and potential terms.

arXiv commentv1, 11 pages; v2, references added, improved presentation and extended discussion; v3, major revision, version accepted for publication in Commun.Theor.Phys

References in corpus (54)

• Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Parameter Results
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• Planck 2018 results. X. Constraints on inflation
• The Standard Model Higgs boson as the inflaton
• A Dynamical Solution to the Problem of a Small Cosmological Constant and Late-time Cosmic Acceleration
• k-Inflation
• Essentials of k-essence
• Metric-Affine Gauge Theory of Gravity: Field Equations, Noether Identities, World Spinors, and Breaking of Dilation Invariance
• The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Cosmological Implications from two Decades of Spectroscopic Surveys at the Apache Point observatory
• Perturbations in k-inflation
• BICEP / Keck XIII: Improved Constraints on Primordial Gravitational Waves using Planck, WMAP, and BICEP/Keck Observations through the 2018 Observing Season
• Symmetries and Strings in Field Theory and Gravity
• Universality Class in Conformal Inflation
• Superconformal Inflationary $\alpha$-Attractors
• Minimal Supergravity Models of Inflation
• The Unity of Cosmological Attractors
• A universal attractor for inflation at strong coupling
• Superconformal generalizations of the Starobinsky model
• Superconformal Symmetry, NMSSM, and Inflation
• Constraints on symmetry from holography
• Jordan Frame Supergravity and Inflation in NMSSM
• Multi-field Conformal Cosmological Attractors
• Superconformal Symmetry, Supergravity and Cosmology
• Single-field $\alpha$-attractors
• Superconformal Generalization of the Chaotic Inflation Model λϕ^4/4 - ξ/ 2 ϕ^2 R
• Inflation with $R^2$ term in the Palatini formalism
• Reheating in $R^2$ Palatini inflationary models
• Symmetry and Emergence
• Metric-Affine Gauge Theory of Gravity I. Fundamental Structure and Field Equations
• Spontaneous breaking of Weyl quadratic gravity to Einstein action and Higgs potential
• Tunneling wave function of the universe
• Starobinsky-like inflation from induced gravity
• Gauging scale symmetry and inflation: Weyl versus Palatini gravity
• Palatini quadratic gravity: spontaneous breaking of gauged scale symmetry and inflation
• Standard Model in Weyl conformal geometry
• Stueckelberg breaking of Weyl conformal geometry with applications to gravity
• K-inflationary Power Spectra at Second Order
• Induced-Gravity Inflation in no-Scale Supergravity and Beyond
• Tunneling wave function of the universe II: the backreaction problem
• Conformal inflation in the metric-affine geometry
• Minimal $k$-inflation in light of the conformal metric-affine geometry
• Reconciling Induced-Gravity Inflation in Supergravity With The Planck 2013 & BICEP2 Results
• Inflation beyond T-models and primordial B-modes
• Weyl Scaling Invariant $R^2$ Gravity for Inflation and Dark Matter
• More on Universal Superconformal Attractors
• Weyl Symmetry Inspired Inflation and Dark Matter
• Conformal GUT inflation, proton lifetime and non-thermal leptogenesis
• From physical symmetries to emergent gauge symmetries
• Inflation in gauge theory of gravity with local scaling symmetry and quantum induced symmetry breaking
• Constraints on non-minimal coupling from quantum cosmology
• Conformal $\alpha$-attractor Inflation with Weyl Gauge Field
• Emergent gauge symmetries: Yang-Mills theory
• Cosmological evolution in Weyl conformal geometry
• On Conformal Transformation with Multiple Scalar Fields and Geometric Property of Field Space with Einstein-like Solutions

Cited by in corpus (7)

• Palatini formulation of the conformally invariant $f\left(R,L_m\right)$ gravity theory
• Primordial black holes and induced gravitational waves from double-pole inflation
• Dark Matter Production in Weyl $R^2$ Inflation
• Inflation in Weyl Scaling Invariant Gravity with $R^3$ Extensions
• Gravitational Waves from Preheating in Inflation with Weyl Symmetry
• Harrison-Zeldovich attractor: From Planck to ACT results
• Inflation in light of ACT/SPT: A new perspective from Weyl gravity