Results 11 to 20 of about 84,152 (313)

Probing early-universe phase transitions with CMB spectral distortions [PDF]

, 2014
Global, symmetry-breaking phase transitions in the early universe can generate scaling seed networks which lead to metric perturbations. The acoustic waves in the photon-baryon plasma sourced by these metric perturbations, when Silk damped, generate ...
Mustafa A. Amin, Daniel Grin
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Phase transitions in the early and the present Universe: from the big bang to heavy ion collisions [PDF]

, 2001
In these lectures I discuss cosmological phase transitions with the goal of establishing the possibility of observational consequences. I argue that the only phase transition amenable of experimental study within the foreseeable future is that predicted ...
D. Boyanovsky
openalex   +2 more sources

Dynamical Theory of Phase Transitions and Topological Defect Formation in the Early Universe [PDF]

, 2004
We review the current issues of nonequilibrium phase transitions, in particular, in the early universe. Phase transitions cannot maintain thermal equilibrium and become nonequilibrium when the thermal relaxation time scale is greater than the dynamical ...
Sang Pyo Kim
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A new insight into the phase transition in the early Universe with two Higgs doublets [PDF]

, 2018
A bstractWe study the electroweak phase transition in the alignment limit of the CP-conserving two-Higgs-doublet model (2HDM) of Type I and Type II. The effective potential is evaluated at one-loop, where the thermal potential includes Daisy corrections ...
Jérémy Bernon, Ligong Bian, Y. Jiang
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Imprints of early universe cosmology on gravitational waves

Journal of High Energy Physics
We explore the potential of gravitational waves (GWs) to probe the pre-BBN era of the early universe, focusing on the effects of energy injection. Specifically, we examine a hidden sector alongside the Standard Model that undergoes a strong first-order ...
James B. Dent, Bhaskar Dutta, Mudit Rai
doaj   +2 more sources

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
doaj   +1 more source

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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Probing primordial black holes from a first order phase transition through pulsar timing and gravitational wave signals

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
doaj   +1 more source

Gravitational capture of magnetic monopoles by primordial black holes in the early universe [PDF]

Journal of High Energy Physics, 2023
It is intriguing to ask whether the existence of primordial black holes (PBHs) in the early universe could significantly reduce the abundance of certain stable massive particles (SMP) via gravitational capture, after which the PBHs evaporate before BBN ...
Chen Zhang, Xin Zhang
semanticscholar   +1 more source

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, Anson Hook, Gustavo Marques-Tavares   +2 more
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