Results 31 to 40 of about 121,587 (192)

Probing the Fundamental Symmetries of the Early Universe: The Low Energy Frontier [PDF]

, 2006
Searching for the fundamental symmetries that characterize the particle physics of the early universe lies at the forefront of particle physics, nuclear physics, and cosmology. In this talk, I review low energy probes of these symmetries and discuss what
Ramsey-Musolf, M. J.
core   +2 more sources

Dark matter substructures affect dark matter-electron scattering in xenon-based direct detection experiments

Journal of High Energy Physics, 2023
Recent sky surveys have discovered a large number of stellar substructures. It is highly likely that there are dark matter (DM) counterparts to these stellar substructures.
Tarak Nath Maity, Ranjan Laha
doaj   +1 more source

BBN And The CBR Probe The Early Universe [PDF]

, 2006
Big Bang Nucleosynthesis (BBN) and the Cosmic Background Radiation (CBR) provide complementary probes of the early evolution of the Universe and of its particle content.
Steigman, Gary
core   +3 more sources

WIMPs, FIMPs, and Inflaton phenomenology via reheating, CMB and ∆N eff

Journal of High Energy Physics, 2023
In this paper, we extensively analyzed the reheating dynamics after inflation and looked into its possible implication on dark matter (DM) and inflaton phenomenology.
MD Riajul Haque, Debaprasad Maity, Rajesh Mondal   +2 more
doaj   +1 more source

Quantum interference in gravitational particle production

Journal of High Energy Physics, 2022
Previous numerical investigations of gravitational particle production during the coherent oscillation period of inflation displayed unexplained fluctuations in the spectral density of the produced particles.
Edward Basso, Daniel J. H. Chung, Edward W. Kolb, Andrew J. Long   +3 more
doaj   +1 more source

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

Inflection-point inflation and dark matter redux

Journal of High Energy Physics, 2022
We investigate for viable models of inflation that can successfully produce dark matter (DM) from inflaton decay process, satisfying all the constraints from Cosmic Microwave Background (CMB) and from some other observations.
Anish Ghoshal, Gaetano Lambiase, Supratik Pal, Arnab Paul, Shiladitya Porey   +4 more
doaj   +1 more source

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
doaj   +1 more source

Glueballs in a thermal squeezeout model

Journal of High Energy Physics, 2022
It has been shown that a first order confinement phase transition can drastically change the relic dark matter abundance in confining dark sectors with only heavy dark quarks.
Pouya Asadi, Eric David Kramer, Eric Kuflik, Tracy R. Slatyer, Juri Smirnov   +4 more
doaj   +1 more source

Bubble-wall velocity in local thermal equilibrium: hydrodynamical simulations vs analytical treatment

Journal of High Energy Physics
We perform real-time hydrodynamical simulations of the growth of bubbles formed during cosmological first-order phase transitions under the assumption of local thermal equilibrium.
Tomasz Krajewski, Marek Lewicki, Mateusz Zych   +2 more
doaj   +1 more source