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Phase transitions in the early universe
SciPost Physics Lecture Notes, 2021 These lecture notes are based on a course given by Mark Hindmarsh at the 24th Saalburg Summer School 2018 and written up by Marvin L\"uben, Johannes Lumma and Martin Pauly.
Mark Hindmarsh, Marvin Lüben, Johannes Lumma, Martin Pauly
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Bubble nucleation and quantum initial conditions in classical statistical simulations
Journal of High Energy Physics, 2022 Classical-statistical lattice simulations provide a useful approximation to out-of-equilibrium quantum field theory, but only for systems exhibiting large occupation numbers, and only for phenomena that are not intrinsically quantum mechanical in nature.
Anders Tranberg, Gerhard Ungersbäck
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Journal of High Energy Physics, 2023 In this work, we assess the sensitivity reach of pulsar timing array (PTA) measurements to probe pointlike primordial black holes (PBHs), with an extended mass distribution, which originate from collapsed Fermi balls that are formed through the ...
Jan Tristram Acuña, Po-Yan Tseng
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Large primordial fluctuations in gravitational waves from phase transitions
Journal of High Energy Physics, 2023 It is well-known that first-order phase transitions in the early universe can be a powerful source of observable stochastic gravitational wave backgrounds.
Arushi Bodas, Raman Sundrum
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Precision early universe cosmology from stochastic gravitational waves
Journal of High Energy Physics, 2022 The causal tail of stochastic gravitational waves can be used to probe the energy density in free streaming relativistic species as well as measure g * (T) and beta functions β(T) as a function of temperature.
Dawid Brzeminski +2 more
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The supercooling window at weak and strong coupling
Journal of High Energy Physics, 2023 Supercooled first order phase transitions are typical of theories where conformal symmetry is predominantly spontaneously broken. In these theories the fate of the flat scalar direction is highly sensitive to the size and the scaling dimension of the ...
Noam Levi +2 more
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Journal of High Energy Physics, 2023 5D warped extra dimension models with multiple 3-branes can naturally realize multiple hierarchical mass scales which are ubiquitous in physics beyond the Standard Model.
Sudhakantha Girmohanta +3 more
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Boosted dark matter from primordial black holes produced in a first-order phase transition
Journal of High Energy Physics, 2023 During a cosmological first-order phase transition in a dark sector, fermion dark matter particles χ can form macroscopic Fermi balls that collapse to primordial black holes (PBHs) under certain conditions.
Danny Marfatia, Po-Yan Tseng
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Searching for heavy leptophilic Z′: from lepton colliders to gravitational waves
Journal of High Energy Physics, 2023 We study the phenomenology of leptophilic Z′ gauge bosons at the future high-energy e + e − and μ + μ − colliders, as well as at the gravitational wave observatories.
Arnab Dasgupta +5 more
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Committing to bubbles: finding the critical configuration on the lattice
Journal of High Energy PhysicsThe nucleation of bubbles in first-order phase transitions is traditionally characterised by the critical bubble: defined as the saddle-point solution of the Euclidean action that separates collapsing from expanding field configurations.
Tomasz P. Dutka
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