QCD Axion Kinetic Misalignment without Prejudice
- Publikationstyp:
- Zeitschriftenaufsatz
- Metadaten:
-
- Autoren
- Basabendu Barman
- Nicolas Bernal
- Nicklas Ramberg
- Luca Visinelli
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000902879400001&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.3390/universe8120634
- eISSN
- 2218-1997
- Externe Identifier
- Clarivate Analytics Document Solution ID: 7H0CE
- Ausgabe der Veröffentlichung
- 12
- Zeitschrift
- UNIVERSE
- Schlüsselwörter
- cosmology
- dark matter
- axion
- Artikelnummer
- ARTN 634
- Datum der Veröffentlichung
- 2022
- Status
- Published
- Titel
- QCD Axion Kinetic Misalignment without Prejudice
- Sub types
- Article
- Ausgabe der Zeitschrift
- 8
Datenquelle: Web of Science (Lite)
- Andere Metadatenquellen:
-
- Abstract
- <jats:p>The axion field, the angular direction of the complex scalar field associated with the spontaneous symmetry breaking of the Peccei–Quinn (PQ) symmetry, could have originated with initial non-zero velocity. The presence of a non-zero angular velocity resulting from additional terms in the potential that explicitly break the PQ symmetry has important phenomenological consequences such as a modification of the axion mass with respect to the conventional PQ framework or an explanation for the observed matter-antimatter asymmetry. We elaborate further on the consequences of the “kinetic misalignment” mechanism, assuming that axions form the entirety of the dark matter abundance. The kinetic misalignment mechanism possesses a weak limit in which the axion field starts to oscillate at the same temperature as in the conventional PQ framework, and a strong limit corresponding to large initial velocities which effectively delay the onset of oscillations. Following a UV-agnostic approach, we show how this scenario impacts the formation of axion miniclusters, and we sketch the details of these substructures along with potential detecting signatures.</jats:p>
- Autoren
- Basabendu Barman
- Nicolás Bernal
- Nicklas Ramberg
- Luca Visinelli
- DOI
- 10.3390/universe8120634
- eISSN
- 2218-1997
- Ausgabe der Veröffentlichung
- 12
- Zeitschrift
- Universe
- Sprache
- en
- Online publication date
- 2022
- Paginierung
- 634 - 634
- Status
- Published online
- Herausgeber
- MDPI AG
- Herausgeber URL
- http://dx.doi.org/10.3390/universe8120634
- Datum der Datenerfassung
- 2022
- Titel
- QCD Axion Kinetic Misalignment without Prejudice
- Ausgabe der Zeitschrift
- 8
Datenquelle: Crossref
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