Journal Article

PUBDB-2023-05315

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Metastable cosmic strings

Buchmuller, W.DESY* ; Domcke, V. (Corresponding author)Extern* ; Schmitz, K.

2023
IOP London

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Please use a persistent id in citations: doi:10.1088/1475-7516/2023/11/020  doi:10.3204/PUBDB-2023-05315

Report No.: CERN-TH-2023-118; DESY-23-117

Abstract: Many symmetry breaking patterns in grand unified theories (GUTs) give rise to cosmic strings that eventually decay when pairs of GUT monopoles spontaneously nucleate along the string cores. These strings are known as metastable cosmic strings and have intriguing implications for particle physics and cosmology. In this article, we discuss the current status of metastable cosmic strings, with a focus on possible GUT embeddings and connections to inflation, neutrinos, and gravitational waves (GWs). The GW signal emitted by a network of metastable cosmic strings in the early universe differs, in particular, from the signal emitted by topologically stable strings by a suppression at low frequencies. Therefore, if the underlying symmetry breaking scale is close to the GUT scale, the resulting GW spectrum can be accessible at current ground-based interferometers as well as at future space-based interferometers, such as LISA, and at the same time account for the signal in the most recent pulsar timing data sets. Metastable cosmic strings thus nourish the hope that future GW observations might shed light on fundamental physics close to the GUT scale.

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. GRK 2149 - GRK 2149: Starke und schwache Wechselwirkung - von Hadronen zu Dunkler Materie (269952272) (269952272)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2023

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Essential Science Indicators ; IF >= 5 ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Buchmuller, W.DESY* ; Domcke, V. (Corresponding author)Extern* ; Schmitz, K.
Metastable cosmic strings
[10.3204/PUBDB-2023-04515]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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