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Warm Inflation
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abstract
Assuming a first order phase transition during inflation, a model scenario is described which does not require a tiny coupling constant. Thermal equilibrium is closely maintained as inflation commences. No large scale reheating is necessary. Solutions for $N> 70$ are found for any $\delta \rho / \rho$ in the range $10^{-5} - 10^{-3}$.
Forward citations
Cited by 16 Pith papers
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Axion-driven spontaneous leptogenesis, precisely
Standard-misalignment axions coupled to strong or weak sphalerons can produce the observed baryon asymmetry at GUT-scale decay constants, whereas the vanilla Majoron scenario is ruled out by late-time dilution.
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Dissecting the Scalar Cosmological Collider with the Cosmic Microwave Background
A joint Bayesian fit of the multi-field inflationary Lagrangian to Planck bispectrum data finds no cosmological collider signal (max Δχ²=5.3) and shows weak-mixing template searches are invalid except at the smallest masses.
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Searching for Folded Primordial Non-Gaussianity with Galaxy Surveys
The galaxy bispectrum, not the power spectrum, is the main probe of folded primordial non-Gaussianity; narrow folded signals are washed out by Fourier-space binning.
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Heterotic Warm Inflation
In a heterotic-string-inspired two-field warm inflation model, the axion drives inflation while thermal corrections from gauge fields block sustained dilaton-driven inflation.
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Warm Inflation with Pseudo-scalar Couplings
Warm inflation models with pseudo-scalar couplings require inclusion of induced chemical potentials that make the thermal friction-fluctuation relation model-dependent rather than universal.
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Axion isocurvature and the model-building problem of low-scale inflation
A light pre-inflationary QCD axion that is all the dark matter forces the inflationary Hubble scale below ~10^7–10^10 GeV and, for canonical slow-roll inflation, confines the inflaton to sub-10^-4 M_Pl of field motion...
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DSWIM:Efficient and Stable Deterministic Computation of Warm Inflation Perturbations
DSWIM adds a scaled deterministic correlation-matrix solver to SWIM that improves numerical conditioning for warm-inflation perturbations while exactly preserving the curvature power spectrum and resolving stochastic-...
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Dark Matter as an Inflationary Relic in Warm Inflation
In warm inflation with Υ∝T³, a residual inflaton condensate after rapid drop in Q evolves as cold dark matter with mass fixed at m≈0.02 MeV by the observed abundance.
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The Noise of Vacuum
A vacuum-decay model generates primordial curvature perturbations from spatially correlated stochastic noise rather than inflaton fluctuations, solving horizon and flatness problems with zero tensor-to-scalar ratio.
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Preheated inflation
Slow-roll inflation can sustain a subdominant non-thermal radiation bath through narrow parametric resonance, producing observable oscillatory features in the curvature power spectrum and secondary gravitational waves.
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Behaviour of $\alpha$-attractors in Warm Inflation
In strongly dissipative warm inflation, T, E, and polynomial alpha-attractor models lose the cold-inflation attractor convergence in the n_s-r plane.
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Probing the self-coherence of primordial quantum fluctuations with complexity
Complexity of formation, unlike complexity of purification, shows distinct and timescale-matching signatures of both decoherence and recoherence in a Gaussian two-field de Sitter model.
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Coherent and Stochastic Axion Dark Matter from Thermal Relaxation
Thermal relaxation of an axion field produces a dark matter relic whose coherent and stochastic parts share one optical depth, yielding a subthermal momentum spectrum.
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Observing Cosmic Reheating with the expanded Simons Observatory
Expanded Simons Observatory could measure reheating temperature and inflaton-gluon coupling to a few percent in QCD-driven warm inflation if r=0.01 primordial gravitational waves are found.
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Gauss-Bonnet-induced symmetry breaking/restoration during inflation
A Gauss-Bonnet coupling can flip a scalar field's effective mass sign during inflation, triggering symmetry breaking or restoration mid-inflation while leaving the inflationary background and its CMB predictions essen...
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Lectures on Naturalness, String Landscape and Multiverse
Lecture notes providing a technical introduction to naturalness problems and the string theory landscape for graduate students.
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