Preprint

PUBDB-2019-04368

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Axion Fragmentation

Fonseca de Sa, N.DESY* ; Morgante, E.DESY* ; Sato, R. (Corresponding author)DESY* ; Servant, G.DESY*

2019

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Please use a persistent id in citations: doi:10.3204/PUBDB-2019-04368

Report No.: DESY 19-202; arXiv:1911.08472

Abstract: 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.

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)
2. DFG project 390833306 - EXC 2121: Quantum Universe (390833306) (390833306)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2019

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Database coverage:
; Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Fonseca de Sa, N. (Corresponding author)DESY* ; Morgante, E. (Corresponding author)DESY* ; Sato, R. (Corresponding author)DESY* ; Servant, G. (Corresponding author)DESY*
Axion fragmentation
Journal of high energy physics 04(4), 010 (2020) [10.1007/JHEP04(2020)010]2020     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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