Results 41 to 50 of about 23,762 (159)

Dark matter and baryon-number generation in quintessential inflation via hierarchical right-handed neutrinos

Physics Letters B, 2019
Incorporating three generations of right-handed Majorana neutrinos to quintessential inflation, we construct a model which simultaneously explains inflation, dark energy, dark matter and baryogenesis.
Soichiro Hashiba, Jun'ichi Yokoyama
doaj   +1 more source

Leptogenesis from spontaneous symmetry breaking during inflation

Journal of High Energy Physics, 2019
Symmetry breaking in the Higgs field via a non-minimal coupling to gravity or higher-dimensional interactions with the inflaton can lead to condensation at a large vacuum expectation value (VEV) during inflation.
Yi-Peng Wu, Louis Yang, Alexander Kusenko   +2 more
doaj   +1 more source

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, Toby Opferkuch, Diego Redigolo   +2 more
doaj   +1 more source

Disorder in the early universe

Journal of Cosmology and Astroparticle Physics, 2015
29 pages; v2: typos fixed, minor changes, references ...
openaire   +2 more sources

Electromagnetic leptogenesis — an EFT-consistent analysis via Wilson coefficients. Part II. Low-scale, resonant regime

Journal of High Energy Physics
We study electromagnetic leptogenesis (EMLG) in the low-scale, resonant regime in the specific minimal renormalisable UV completion that generates the gauge-invariant dipole operator O NB $$ {\mathcal{O}}_{NB} $$ = L ¯ σ μν N H ~ B μν $$ \left(\overline ...
Rin Takada
doaj   +1 more source

An Intrinsic Coordinate Reference Frame Procedure I: Tensorial Canonical Weyl Scalars

Universe
The canonical quantization of gravity in general relativity is greatly simplified by the artificial decomposition of space time into a 3 + 1 formalism. Such a simplification appears to come at the cost of general covariance.
Cooper K. Watson, William Julius, Patrick Brown, Donald Salisbury, Gerald B. Cleaver   +4 more
doaj   +1 more source

Calabi-Yau Manifolds, Hermitian Yang-Mills Instantons, and Mirror Symmetry

Advances in High Energy Physics, 2017
We address the issue of why Calabi-Yau manifolds exist with a mirror pair. We observe that the irreducible spinor representation of the Lorentz group Spin(6) requires us to consider the vector spaces of two forms and four forms on an equal footing.
Hyun Seok Yang, Sangheon Yun
doaj   +1 more source

Quartic Gradient Flow

Physics Letters B
Saddle-point configurations, such as the Euclidean bounce and sphalerons, are known to be difficult to find numerically. In this letter we study a new method, Quartic Gradient Flow, to search for such configurations.
Muzi Hong, Ryusuke Jinno
doaj   +1 more source

Electromagnetic leptogenesis — an EFT-consistent analysis via Wilson coefficients. Part I. Low-scale, non-resonant regime

Journal of High Energy Physics
We analyse electromagnetic leptogenesis within the framework of an effective field theory, where the dynamics is governed by the gauge-invariant dipole operator $${\mathcal{O}}_{NB}=\left(\overline{L}{\sigma }^{\mu \nu }N\right)\widetilde{H}{B}_{\mu \nu }
Rin Takada
doaj   +1 more source

Simulations in Early-Universe Theory

Proceedings of XXIIIrd International Symposium on Lattice Field Theory — PoS(LAT2005), 2005
We give an impression of the type of results that have been obtained with numerical lattice simulations of field theory in the early universe.
openaire   +3 more sources