Preheating axions in string cosmology

A bstract Certain inflationary models can feature periods of preheating — an era preceding reheating during which parametric resonance triggers an exponential production of bosons. This non-perturbative process can have significant impact on the history of our universe, with consequences ranging fro...

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Bibliographic Details
Published in:The journal of high energy physics Vol. 2025; no. 4; pp. 95 - 47
Main Authors: Leedom, Jacob M., Putti, Margherita, Righi, Nicole, Westphal, Alexander
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 15.04.2025
Springer Nature B.V
SpringerOpen
Subjects:
Axions and ALPs
Bosons
Classical and Quantum Gravitation
Cosmology
Couplings
Dark matter
Early Universe Particle Physics
Elementary Particles
Gravitational waves
Heating
High energy physics
Hypothetical particles
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Radiation
Regular Article - Theoretical Physics
Relativity Theory
Resonance
String and Brane Phenomenology
String Theory
Strings
Superstring Vacua
Superstring Vacua
Axions and ALPs
String and Brane Phenomenology
Early Universe Particle Physics
ISSN:1029-8479, 1029-8479
Online Access:Get full text
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Summary:A bstract Certain inflationary models can feature periods of preheating — an era preceding reheating during which parametric resonance triggers an exponential production of bosons. This non-perturbative process can have significant impact on the history of our universe, with consequences ranging from altered reheating channels to overproduction of dark radiation to overclosure. In this work, we study parametric resonance production of axions in string models of inflation. We find that the kinetic couplings and moduli-dependent axion masses give rise to generalizations of the Mathieu equation. We study these generalizations and determine the strength of parametric resonance created by such couplings. We then apply this technology to fibre inflation models in Type IIB orientifold compactifications. We find that heavy axions can be copiously produced and avoidance of overclosure results in constraints on the typical fibre inflation parameter space.
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ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP04(2025)095