Gravitational waves from cosmic superstrings and gauge strings

A bstract We perform a phenomenological comparison of the gravitational wave (GW) spectrum expected from cosmic gauge string networks and superstring networks comprised of multiple string types. We show how violations of scaling behavior and the evolution of the number of relativistic degrees of fre...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:The journal of high energy physics Jg. 2024; H. 7; S. 204 - 27
Hauptverfasser: Marfatia, Danny, Zhou, Ye-Ling
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Berlin/Heidelberg Springer Berlin Heidelberg 01.07.2024
Springer Nature B.V
Springer Nature
SpringerOpen
Schlagworte:
Classical and Quantum Gravitation
Data analysis
Early Universe Particle Physics
Elementary Particles
Gravitational waves
Interferometers
Laser arrays
Networks
Phase Transitions in the Early Universe
Physics
Physics and Astronomy
Pulsars
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
String Theory
String Theory and Cosmic Strings
String Theory and Cosmic Strings
Early Universe Particle Physics
Phase Transitions in the Early Universe
ISSN:1029-8479, 1029-8479
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A bstract We perform a phenomenological comparison of the gravitational wave (GW) spectrum expected from cosmic gauge string networks and superstring networks comprised of multiple string types. We show how violations of scaling behavior and the evolution of the number of relativistic degrees of freedom in the early Universe affect the GW spectrum. We derive simple analytical expressions for the GW spectrum from superstrings and gauge strings that are valid for all frequencies relevant to pulsar timing arrays (PTAs) and laser interferometers. We analyze the latest data from PTAs and show that superstring networks are consistent with 32 nHz data from NANOGrav, but are excluded by 3.2 nHz data at 3 σ unless the string coupling g s < 0 . 2 or the strings evolve in only about 10% of the volume of the higher-dimensional space. We also point out that while gauge string networks are excluded by NANOGrav-15 data at 3 σ , they are completely compatible with EPTA and PPTA data. Finally, we study correlations between GW signals at PTAs and laser interferometers.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
SC0010504
None
USDOE Office of Science (SC)
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP07(2024)204