Results 21 to 30 of about 430 (123)
Nonperturbative analysis of the gravitational waves from a first-order electroweak phase transition [PDF]
, 2019 We present the first end-to-end nonperturbative analysis of the gravitational wave power spectrum from a thermal first-order electroweak phase transition (EWPT), using the framework of dimensionally reduced effective field theory and preexisting ...
Tenkanen, Tuomas V.I. +6 more
core +1 more source
Higher orders for cosmological phase transitions: a global study in a Yukawa model
, 2023 We perform a state-of-the-art global study of the cosmological thermal histories of a simple Yukawa model, and find higher perturbative orders to be important for determining both the presence and strength of strong first-order phase transitions.
Xie, Cheng, Gould, Oliver
core +1 more source
Global Existence of Solutions for the Viscoelastic Kirchhoff Equation with Logarithmic Source Terms
Complexity, Volume 2020, Issue 1, 2020., 2020 In this paper, a nonlinear viscoelastic Kirchhoff equation in a bounded domain with a time‐varying delay term and logarithmic nonlinearity in the weakly nonlinear internal feedback is considered, where the global and local existence of solutions in suitable Sobolev spaces by means of the energy method combined with Faedo‐Galerkin procedure is proved ...
Nadia Mezouar +3 more
wiley +1 more source
Full higher-dimensional analysis of moduli oscillation and radiation in expanding universe
Journal of High Energy Physics, 2023 We investigate effects of the radiation and the moduli oscillation around the stabilized values on the evolution of a 6-dimensional spacetime compactified on S 2.
Hajime Otsuka, Yutaka Sakamura
doaj +1 more source
Fingerprints of High Energy Physics Beyond Colliders [PDF]
, 2022 Hints of new physics Beyond the Standard Model (BSM) range from dark matter and the strong CP problem to grand unification and the origin of the matter-antimatter asymmetry.
Dunsky, David I.
core
Freeze-in dark matter via lepton portal: Hubble tension and stellar cooling
Journal of High Energy Physics, 2023 We propose a new freeze-in dark matter candidate which feebly couples to the standard model charged leptons. The feeble interactions allow it (i) to freeze-in from the Standard Model thermal bath with its relic density being either a fraction or the ...
Zixuan Xu +3 more
doaj +1 more source
Scalar field couplings to quadratic curvature and decay into gravitons
Journal of High Energy Physics, 2022 Any field, even if it lives in a completely hidden sector, interacts with the visible sector at least via the gravitational interaction. In this paper, we show that a scalar field in such a hidden sector generically couples to the quadratic curvature via
Yohei Ema +2 more
doaj +1 more source
Moduli inflation from modular flavor symmetries
Journal of High Energy Physics, 2023 We study slow-roll inflation model controlled by the modular flavor symmetry. In the model, the modulus field plays a role of inflaton and the introduction of the stabilizer field coupled to a modular form in the superpotential produces the inflaton ...
Yoshihiko Abe +4 more
doaj +1 more source
Slow-roll inflation in Palatini F(R) gravity
Journal of High Energy Physics, 2022 We study single field slow-roll inflation in the presence of F(R) gravity in the Palatini formulation. In contrast to metric F(R), when rewritten in terms of an auxiliary field and moved to the Einstein frame, Palatini F(R) does not develop a new ...
Christian Dioguardi +2 more
doaj +1 more source
Phase information in cosmological collider signals
Journal of High Energy Physics, 2022 Massive particles produced during the cosmic inflation can imprint in the primordial non-Gaussianities as characteristic oscillating functions of various momentum ratios, known as cosmological collider signals.
Zhehan Qin, Zhong-Zhi Xianyu
doaj +1 more source