Results 61 to 70 of about 21,702 (168)
Neutrino dark matter and the Higgs portal: improved freeze-in analysis
Journal of High Energy Physics, 2020 Sterile neutrinos are one of the leading dark matter candidates. Their masses may originate from a vacuum expectation value of a scalar field. If the sterile neutrino couplings are very small and their direct coupling to the inflaton is forbidden by the ...
Valentina De Romeri +3 more
doaj +1 more source
Vector dark matter from split SU(2) gauge bosons
Journal of High Energy Physics, 2021 We propose a vector dark matter model with an exotic dark SU(2) gauge group. Two Higgs triplets are introduced to spontaneously break the symmetry. All of the dark gauge bosons become massive, and the lightest one is a viable vector DM candidate.
Zexi Hu +4 more
doaj +1 more source
Cosmology in Mirror Twin Higgs and Neutrino Masses
, 2016 We explore a simple solution to the cosmological challenges of the original Mirror Twin Higgs (MTH) model that leads to interesting implications for experiment.
Chacko, Zackaria +3 more
core +1 more source
Fortschritte der Physik, Volume 73, Issue 9-10, October 2025.Abstract The unification of conformal and fuzzy gravities with internal interactions is based on the facts that i) the tangent group of a curved manifold and the manifold itself do not necessarily have the same dimensions and ii) both gravitational theories considered here have been formulated in a gauge theoretic way.
Gregory Patellis +3 more
wiley +1 more source
Conformal vector dark matter and strongly first-order electroweak phase transition
Journal of High Energy Physics, 2019 We study a conformal version of the Standard Model (SM), which apart from SM sector, containing a U D (1) dark sector with a vector dark matter candidate and a scalar field (scalon).
Seyed Yaser Ayazi, Ahmad Mohamadnejad
doaj +1 more source
Cosmological particle production and pairwise hotspots on the CMB
Journal of High Energy Physics, 2021 Heavy particles with masses much bigger than the inflationary Hubble scale H *, can get non-adiabatically pair produced during inflation through their couplings to the inflaton. If such couplings give rise to time-dependent masses for the heavy particles,
Jeong Han Kim +3 more
doaj +1 more source
Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.Abstract The Planetary Instrument for X‐ray Lithochemistry (PIXL) onboard the Perseverance rover has characterized the composition of Martian regolith at a scale of hundreds of microns using micro‐focus X‐ray fluorescence spectroscopy. PIXL data reveal a diverse population of regolith grains with distinct spectral, chemical, and crystallographic ...
Andrew O. Shumway +23 more
wiley +1 more source
A feeble window on leptophilic dark matter
Journal of High Energy Physics, 2019 In this paper we study a leptophilic dark matter scenario involving feeble dark matter coupling to the Standard Model (SM) and compressed dark matter-mediator mass spectrum.
Sam Junius +2 more
doaj +1 more source
, 2010 The after-dinner talk has by now become a tradition of this Conference series on Quark Confinement and the Hadron Spectrum. On this occasion, I have tried to combine a free-style and (hopefully) amusing presentation with deep questions of physics ...
Sanchis-Lozano, Miguel-Angel
core +1 more source
Global and microlocal aspects of Dirac operators: Propagators and Hadamard states
Mathematische Nachrichten, Volume 298, Issue 9, Page 2942-2974, September 2025.Abstract We propose a geometric approach to construct the Cauchy evolution operator for the Lorentzian Dirac operator on Cauchy‐compact globally hyperbolic 4‐manifolds. We realize the Cauchy evolution operator as the sum of two invariantly defined oscillatory integrals—the positive and negative Dirac propagators—global in space and in time, with ...
Matteo Capoferri, Simone Murro
wiley +1 more source