Axion fragmentation

A bstract We investigate the production of axion quanta during the early universe evolution of an axion-like field rolling down a wiggly potential. We compute the growth of quantum fluctuations and their back-reaction on the homogeneous zero-mode. We evaluate the transfer of kinetic energy from the...

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Bibliographic Details
Published inThe journal of high energy physics Vol. 2020; no. 4; pp. 1 - 48
Main Authors Fonseca, Nayara, Morgante, Enrico, Sato, Ryosuke, Servant, Géraldine
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.04.2020
Springer Nature B.V
SpringerOpen
Subjects
Beyond Standard Model
Classical and Quantum Gravitation
Cosmology of Theories beyond the SM
Deceleration
Elementary Particles
Expanding universe theory
High energy physics
Kinetic energy
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
Beyond Standard Model
Cosmology of Theories beyond the SM
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Summary:A bstract We investigate the production of axion quanta during the early universe evolution of an axion-like field rolling down a wiggly potential. We compute the growth of quantum fluctuations and their back-reaction on the homogeneous zero-mode. We evaluate the transfer of kinetic energy from the zero mode to the quantum fluctuations and the conditions to decelerate the axion zero-mode as a function of the Hubble rate, the slope of the potential, the size of the barriers and the initial field velocity. We discuss how these effects impact the relaxion mechanism.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP04(2020)010