Results 1 to 10 of about 21,614 (169)
Gravitational waves from dark Yang-Mills sectors
Journal of High Energy Physics, 2021 Dark Yang-Mills sectors, which are ubiquitous in the string landscape, may be reheated above their critical temperature and subsequently go through a confining first-order phase transition that produces stochastic gravitational waves in the early ...
James Halverson +4 more
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Avoided deconfinement in Randall-Sundrum models
Journal of High Energy Physics, 2021 We study first order phase transitions in Randall-Sundrum models in the early universe dual to confinement in large-N gauge theories. The transition rate to the confined phase is suppressed by a factor exp(− N 2), and may not complete for N » 1, instead ...
Prateek Agrawal, Michael Nee
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String fragmentation in supercooled confinement and implications for dark matter
Journal of High Energy Physics, 2021 A strongly-coupled sector can feature a supercooled confinement transition in the early universe. We point out that, when fundamental quanta of the strong sector are swept into expanding bubbles of the confined phase, the distance between them is large ...
Iason Baldes +2 more
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Resurrecting low-mass axion dark matter via a dynamical QCD scale
Journal of High Energy Physics, 2021 In the framework where the strong coupling is dynamical, the QCD sector may confine at a much higher temperature than it would in the Standard Model, and the temperature-dependent mass of the QCD axion evolves in a non-trivial way.
Lucien Heurtier +2 more
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Black hole production of monopoles in the early universe
Journal of High Energy Physics, 2021 In the early universe, evaporating black holes heat up the surrounding plasma and create a temperature profile around the black hole that can be more important than the black hole itself.
Saurav Das, Anson Hook
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Journal of High Energy Physics, 2021 We investigate the nightmare scenario of dark sectors that are made of non-abelian gauge theories with fermions, gravitationally coupled to the Standard Model (SM).
Raghuveer Garani +2 more
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Dark Matter interpretation of the neutron decay anomaly
Journal of High Energy Physics, 2022 We add to the Standard Model a new fermion χ with minimal baryon number 1/3. Neutron decay n → χχχ into non-relativistic χ can account for the neutron decay anomaly, compatibly with bounds from neutron stars.
Alessandro Strumia
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Manifestly causal in-in perturbation theory about the interacting vacuum
Journal of High Energy Physics, 2021 In-In perturbation theory is a vital tool for cosmology and nonequilibrium physics. Here, we reconcile an apparent conflict between two of its important aspects with particular relevance to De Sitter/inflationary contexts: (i) the need to slightly deform
Matthew Baumgart, Raman Sundrum
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Implications of dark sector mixing on leptophilic scalar dark matter
Journal of High Energy Physics, 2021 We propose a new viable outlook to the mixing between a singlet and a doublet leptonic dark sector fields. This choice relaxes the dark matter (DM) search constraints on the quintessential scalar singlet DM as well as presents new opportunities for its ...
Sreemanti Chakraborti, Rashidul Islam
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Filtered asymmetric dark matter during the Peccei-Quinn phase transition
Journal of High Energy Physics, 2021 In this paper, we propose a bubble filtering-out mechanism for an asymmetric dark matter scenario during the Peccei-Quinn (PQ) phase transition. Based on a QCD axion model, extended by extra chiral neutrinos, we show that the PQ phase transition can be ...
M. Ahmadvand
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