Upper bound on thermal gravitational wave backgrounds from hidden sectors

Znanstveni rad - Izvorni znanstveni rad

• Autor: Marco Drewes
• Autor: Yannis Georis
• Autor: Juraj Klaric
• Autor: Philipp Klose
• Autorova ustanova: Sveučilište u Zagrebu; Prirodoslovno-matematički fakultet; (Fizički odsjek)
• Znanstveno / umjetničko područje, polje i grana: PRIRODNE ZNANOSTI; Fizika

Sažetak (engleski)

Hot viscous plasmas unavoidably emit a gravitational wave background, similar to electromagnetic black body radiation. We study the contribution from hidden particles to the diffuse background emitted by the primordial plasma in the early universe. While this contribution can easily dominate over that from Standard Model particles, we find that both are capped by a generic upper bound that makes them difficult to detect with interferometers in the foreseeable future. We illustrate our results for axion-like particles and heavy neutral leptons. Finally, our results suggest that previous works overestimated the gravitational wave background from particle decays out of thermal equilibrium.

• Ključne riječi (engleski): thermal gravitational wave
• Jezik: engleski
• Vrsta publikacije: Znanstveni rad - Izvorni znanstveni rad
• Status objave: Objavljen
• Vrsta recenzije: Recenziran - međunarodna recenzija
• Verzija publikacije: Objavljena verzija rada (izdavačev PDF)
• Naslov časopisa: Journal of Cosmology and Astroparticle Physics
• Brojčani podaci: vol. 2024, br. 06, 073
• e-ISSN: 1475-7516
• DOI: https://doi.org/10.1088/1475-7516/2024/06/073
• URN:NBN: urn:nbn:hr:217:271935
• Datum objave publikacije: 2024-06-28
• URL dokumenta: https://iopscience.iop.org/article/10.1088/1475-7516/2024/06/073
• Vrsta resursa: Tekst
• Prava pristupa: Otvoreni pristup
• Javna napomena: © 2024 The Author(s). Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received: January 19, 2024. Revised: May 31, 2024. Accepted: June 3, 2024. Published: June 28, 2024.
• Datum i vrijeme pohrane: 2024-07-24 11:09:41