Non-perturbative approach for scalar particle production in Higgs-$R^2$ inflation

Abstract

We investigate the non-perturbative production of scalar particles within the Higgs-$R^2$ inflation model, focusing on a massive spectator field that interacts gravitationally via a non-minimal coupling to the Ricci scalar $R$. By transforming the model to the Einstein frame, where direct couplings between inflationary dynamics and the spectator field emerge, we analyze both perturbative and non-perturbative particle production. We solve the spectator field equation numerically, using the Bogolyubov transformation, to calculate the comoving particle density. Our findings indicate that particle production occurs for light particles with conformal coupling and for masses $m_{\chi }>M/2$ in the minimally coupled scenario.

References in corpus (55)

• Planck 2018 results. X. Constraints on inflation
• Towards the Theory of Reheating After Inflation
• Universe Reheating after Inflation
• Cosmological Magnetic Fields: Their Generation, Evolution and Observation
• Inflation scenario via the Standard Model Higgs boson and LHC
• On initial conditions for the Hot Big Bang
• Primordial magnetogenesis
• Gauge Field Production in Axion Inflation: Consequences for Monodromy, non-Gaussianity in the CMB, and Gravitational Waves at Interferometers
• Particle production during inflation and gravitational waves detectable by ground-based interferometers
• Probing Planckian physics: resonant production of particles during inflation and features in the primordial power spectrum
• On the gravitational production of superheavy dark matter
• Preheating with Trilinear Interactions: Tachyonic Resonance
• Comments on the Starobinsky Model of Inflation and its Descendants
• Gravity waves and non-Gaussian features from particle production in a sector gravitationally coupled to the inflaton
• Conformal Transformations with Multiple Scalar Fields
• Equivalence of the Einstein and Jordan frames
• Gravitational Particle Production in Oscillating Background and Its Cosmological Implications
• Production of Purely Gravitational Dark Matter
• Higgs Scalaron Mixed Inflation
• Violent Preheating in Inflation with Nonminimal Coupling
• Cosmological Particle Production: A Review
• Inflation in the Mixed Higgs-$R^2$ Model
• Scalaron the healer: removing the strong-coupling in the Higgs- and Higgs-dilaton inflations
• Classical inflaton field induced creation of superheavy dark matter
• Primordial magnetic fields from inflation?
• Geometric Reheating after Inflation
• Effects of particle production during inflation
• Cosmological particle production and the precision of the WKB approximation
• Preheating in an Expanding Universe: Analytic Results for the Massless Case
• On the violent preheating in the mixed Higgs-$R^2$ inflationary model
• Primordial Magnetic Fields from the Post-Inflationary Universe
• Gravitational particle creation for dark matter and reheating
• Dark matter from gravitational particle production at reheating
• Frame Covariant Nonminimal Multifield Inflation
• Boltzmann or Bogoliubov? Approaches Compared in Gravitational Particle Production
• UV Freeze-in in Starobinsky Inflation
• Some like it hot: $R^2$ heals Higgs inflation, but does not cool it
• Scalar Dark Matter Production from Preheating and Structure Formation Constraints
• Primordial perturbations and non-Gaussianities from modulated trapping
• Occurrence of Tachyonic Preheating in the Mixed Higgs-$R^2$ Model
• Gravitational production of scalar dark matter
• Non-adiabatic cosmological production of ultra-light Dark Matter
• Free scalar dark matter candidates in R^2-inflation: the light, the heavy and the superheavy
• Reheating and Dark Matter Freeze-in in the Higgs-$R^2$ Inflation Model
• Magnetogenesis in Higgs-Starobinsky inflation
• Perturbative Reheating in the Mixed Higgs-$R^2$ Model
• Isocurvature Constraints on Scalar Dark Matter Production from the Inflaton
• Gravitational waves from fermion production during axion inflation
• Multi-field formulation of gravitational particle production after inflation
• Unification of inflation and dark matter in the Higgs-Starobinsky model
• Completely Dark Matter from Rapid-Turn Multifield Inflation
• Comparing geometric and gravitational particle production in Jordan and Einstein frames
• Primordial Gravitational Waves from Inflation and Preheating
• Gravitational reheating in Starobinsky inflation
• Vacuum Stability in the Early Universe and the Backreaction of Classical Gravity