Results 1 to 10 of about 21,026 (168)
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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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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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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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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Forbidden scalar dark matter and dark Higgses
Journal of High Energy Physics, 2022 As experimental searches for WIMP dark matter continue to yield null results, models beyond the WIMP paradigm have proliferated in order to elude ever improving observational constraints, among them that of sub-GeV dark matter mediated by a massive ...
George N. Wojcik, Thomas G. Rizzo
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Cosmology and signals of light pseudo-Dirac dark matter
Journal of High Energy Physics, 2022 In this paper, we analyze the cosmological evolution, allowed parameter space, and observational prospects for a dark sector consisting of thermally produced pseudo-Dirac fermions with a small mass splitting, coupled to the Standard Model through a dark ...
Mariana Carrillo González, Natalia Toro
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Mirror twin Higgs cosmology: constraints and a possible resolution to the H 0 and S 8 tensions
Journal of High Energy Physics, 2022 The mirror twin Higgs model (MTH) is a solution to the Higgs hierarchy problem that provides well-predicted cosmological signatures with only three extra parameters: the temperature of the twin sector, the abundance of twin baryons, and the vacuum ...
Saurabh Bansal +4 more
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Mirror neutrons as dark matter in the Mirror Twin Two Higgs Doublet Model
Journal of High Energy Physics, 2020 In addition to being a solution to the little hierarchy problem, the Mirror Twin Higgs provides a natural setting for Asymmetric Dark Matter. In its incarnation with only one Higgs doublet and its mirror copy, dark matter would however almost certainly ...
Hugues Beauchesne
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Axion emission from supernova with axion-pion-nucleon contact interaction
Journal of High Energy Physics, 2022 We examine the axion emission from supernovae with a complete set of relevant axion couplings including the axion-pion-nucleon contact interaction which was ignored in the previous studies.
Kiwoon Choi +3 more
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