How generic is cosmic string formation in SUSY GUTs

By R. Jeannerot, Jonathan Rocher, M. Sakellariadou. 2003

182 citations recorded by the source corpus.

We study cosmic string formation within supersymmetric grand uniﬁed theories. We consider gauge groups having a rank between 4 and 8. We examine all possible spontaneous symmetry breaking patterns from the GUT down to the standard model gauge group. Assuming standard hybrid inﬂation, we select all the models which can solve the GUT monopole problem, lead to baryogenesis after inﬂation and are consistent with proton lifetime measurements. We conclude that in all acceptable spontaneous symmetry breaking schemes, cosmic string formation is unavoidable. The strings which form at the end of inﬂation have a mass which is proportional to the inﬂationary scale. Sometimes, a second network of strings form at a lower scale. Models based on gauge groups which have rank greater than 6 can lead to more than one inﬂationary era; they all end by cosmic string formation.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/5a19e00260d6b101a9fe88f099294133b11291cd

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Citations in the corpus

Probing the gravitational wave background from cosmic strings with LISA (2019, background): “There we also discuss the effect of possible departures from this picture, – 6 – including the impact of increasing the effective number of degrees of freedom in the early Universe as well as the impact of an equation-of-state different than that during radiation domination.”
Cosmological evolution of cosmic string loops (2005, background): “If cosmic strings are formed at the end of inflation [3], they should still be present in the observable universe and many studies have been devoted to the understanding of their cosmological implications (see [4, 5] for a review and references therein and thereto).”
Cosmic strings and superstrings (2009, background): “However, given the expectation that the particle phenomenology associated with superstrings is expected to be rich, we may well expect there to be standard cosmic strings, with tensions well below the string scale emerging out of the supersymmetric grand unified theories (Jeanerrot et al 2003).”
COrE (Cosmic Origins Explorer) A White Paper (2011, background): “This is likely to be the case for a large fraction of symmetry breaking schemes from popular GUT models such as SO(10) [40].”
Challenges and opportunities of gravitational-wave searches at MHz to GHz frequencies (2020, background): “Cosmic strings are one-dimensional topological defect solutions which may have formed after a phase transitions in the early Universe, if the first homotopy group of the vacuum manifold associated with the symmetry breaking is non-trivial (Kibble 1976; Jeannerot et al. 2003).”
Science case for the Einstein telescope (2019, background): “In the context of Grand Unified Theories, it has been shown [222] that one-dimensional defects, called cosmic strings are generically formed.”
From NANOGrav to LIGO with metastable cosmic strings (2020, background): “Another prominent possibility is cosmic strings formed in a U(1) symmetry-breaking phase transition in the early universe [13,14].”