Autoren:	Centers, Gary P. Blanchard, John W. Conrad, Jan Figueroa, Nataniel L. Garcon, Antoine Gramolin, Alexander V. Kimball, Derek F. Jackson Lawson, Matthew Pelssers, Bart Smiga, Joseph A. Sushkov, Alexander O. Wickenbrock, Arne Budker, Dmitry Derevianko, Andrei
Titel:	Stochastic fluctuations of bosonic dark matter
Online-Publikationsdatum:	11-Apr-2022
Erscheinungsdatum:	2021
Sprache des Dokuments:	Englisch
Zusammenfassung/Abstract:	Numerous theories extending beyond the standard model of particle physics predict the existence of bosons that could constitute dark matter. In the standard halo model of galactic dark matter, the velocity distribution of the bosonic dark matter field defines a characteristic coherence time τc. Until recently, laboratory experiments searching for bosonic dark matter fields have been in the regime where the measurement time T significantly exceeds τc, so null results have been interpreted by assuming a bosonic field amplitude Φ0 fixed by the average local dark matter density. Here we show that experiments operating in the T ≪ τc regime do not sample the full distribution of bosonic dark matter field amplitudes and therefore it is incorrect to assume a fixed value of Φ0 when inferring constraints. Instead, in order to interpret laboratory measurements (even in the event of a discovery), it is necessary to account for the stochastic nature of such a virialized ultralight field. The constraints inferred from several previous null experiments searching for ultralight bosonic dark matter were overestimated by factors ranging from 3 to 10 depending on experimental details, model assumptions, and choice of inference framework.
DDC-Sachgruppe:	530 Physik 530 Physics
Veröffentlichende Institution:	Johannes Gutenberg-Universität Mainz
Organisationseinheit:	FB 08 Physik, Mathematik u. Informatik
Veröffentlichungsort:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-6880
Version:	Published version
Publikationstyp:	Zeitschriftenaufsatz
Nutzungsrechte:	CC BY
Informationen zu den Nutzungsrechten:	https://creativecommons.org/licenses/by/4.0/
Zeitschrift:	Nature Communications 12
Seitenzahl oder Artikelnummer:	7321
Verlag:	Nature Publishing Group
Verlagsort:	London
Erscheinungsdatum:	2021
ISSN:	2041-1723
DOI der Originalveröffentlichung:	10.1038/s41467-021-27632-7
Enthalten in den Sammlungen:	JGU-Publikationen