Results 1 to 10 of about 2,659,647 (196)

$U(1)_{B-L}$ extra-natural inflation with Standard Model on a brane [PDF]

open access: yesPhys. Lett. B729 (2014) 56-61, 2013
The interrelation between inflationary cosmology and new physics beyond the Standard Model (SM) is studied in a $U(1)_{B-L}$ extension of the SM embedded in a (4+1)-dimensional spacetime. In the scenario we study, the inflaton arises from the Wilson loop of the $U(1)_{B-L}$ gauge group winding an extra-dimensional cycle. Particular attention is paid to
Furuuchi, Kazuyuki, Wu, Jackson M. S.
arxiv   +4 more sources

Euclid preparation. XLIV. Modelling spectroscopic clustering on mildly nonlinear scales in beyond-LCDM models [PDF]

open access: yesAstronomy & Astrophysics, 2023
The space satellite mission will measure the large-scale clustering of galaxies at an unprecedented precision, providing a unique probe of modifications to the Lambda CDM model.
Euclid Collaboration B. Bose   +499 more
semanticscholar   +1 more source

Inflation in symmergent metric-Palatini gravity [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2023
In this paper, we study the cosmological inflation phenomenon in symmergent gravity theory. Symmergent gravity is a novel framework which merges gravity and the standard model (SM) so that the gravity emerges from the matter loops and restores the broken
N. Bostan, Canan Karahan, Ozan Sargın
semanticscholar   +1 more source

Gravitational waves from dark Yang-Mills sectors

open access: yesJournal 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
doaj   +1 more source

String fragmentation in supercooled confinement and implications for dark matter

open access: yesJournal 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
doaj   +1 more source

Avoided deconfinement in Randall-Sundrum models

open access: yesJournal 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
doaj   +1 more source

Black hole production of monopoles in the early universe

open access: yesJournal 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
doaj   +1 more source

Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider [PDF]

open access: yesJournal of Physics G: Nuclear and Particle Physics, 2019
Particles beyond the Standard Model (SM) can generically have lifetimes that are long compared to SM particles at the weak scale. When produced at experiments such as the Large Hadron Collider (LHC) at CERN, these long-lived particles (LLPs) can decay ...
J. Alimena   +334 more
semanticscholar   +1 more source

Resurrecting low-mass axion dark matter via a dynamical QCD scale

open access: yesJournal 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
doaj   +1 more source

Dark QCD matters

open access: yesJournal 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
doaj   +1 more source

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