Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Stanislav Rusak"'
Publikováno v:
Physics Letters B, Vol 789, Iss , Pp 373-377 (2019)
The quartic and trilinear Higgs field couplings to an additional real scalar are renormalizable, gauge and Lorentz invariant. Thus, on general grounds, one expects such couplings between the Higgs and an inflaton in quantum field theory. We find that
Externí odkaz:
https://doaj.org/article/a9db6d356a0e470598e543fa9c30a5b6
We argue that double inflation may occur when a spectator field is non-minimally coupled to gravity. As a concrete example, we study a two-field inflationary model where the initial spectator field is non-minimally coupled to gravity while the initia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57cb4a0e57a5ef86f8186f511cc323a5
With the help of the tachyonic trapping mechanism one can potentially solve a number of problems affecting quintessential inflation models. In this mechanism we introduce a trapping field with a spontaneous symmetry breaking potential. When the quint
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96f629b14d014d69c767e9d58408e20d
http://arxiv.org/abs/2112.11536
http://arxiv.org/abs/2112.11536
Autor:
Stanislav Rusak
Current cosmological data favour inflationary models non-minimally coupled to gravity. In this work we study the implications of the metastability of the electroweak vacuum in this framework. We consider an inflaton field with a non-minimal coupling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2cb6c4d6fb6b0250a168e6f4017095c6
http://arxiv.org/abs/1811.10569
http://arxiv.org/abs/1811.10569
We study the resonant decay of the primordial Standard Model Higgs condensate after inflation into $SU(2)$ gauge bosons on the lattice. We find that the non-Abelian interactions between the gauge bosons quickly extend the momentum distribution toward
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bdb70ddf19c555cf1d79c9441f575cd
http://arxiv.org/abs/1506.06895
http://arxiv.org/abs/1506.06895
We study the resonant decay of the Higgs condensate into weak gauge bosons after inflation and estimate the corrections arising from the non-Abelian self-interactions of the gauge fields. We find that non-Abelian interaction terms induce an effective
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ab5fdbe6443b3b0bb1f3edc089a23381
http://arxiv.org/abs/1404.3631
http://arxiv.org/abs/1404.3631
We use WMAP 9-year and other CMB data to constrain cosmological models where the primordial perturbations have both an adiabatic and a (possibly correlated) neutrino density (NDI), neutrino velocity (NVI), or cold dark matter density (CDI) isocurvatu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f09ce3b97151711bdcb4fbeb606d0aac
http://hdl.handle.net/10138/234264
http://hdl.handle.net/10138/234264
The behaviour of oscillating scalar spectator fields after inflation depends on the thermal background produced by inflaton decay. Resonant decay of the spectator is often blocked by large induced thermal masses. We account for the finite decay width
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::236e1b81ff89348421f9755644a592de
Publikováno v:
Journal of Cosmology and Astroparticle Physics
The Higgs-inflaton coupling plays an important role in the Higgs field dynamics in the early Universe. Even a tiny coupling generated at loop level can have a dramatic effect on the fate of the electroweak vacuum. Such Higgs-inflaton interaction is p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29451f49428c57ac2e073ed21f8cbb16
https://doi.org/10.1088/1475-7516/2016/11/025
https://doi.org/10.1088/1475-7516/2016/11/025
Autor:
Stanislav Rusak, Kari Enqvist
Publikováno v:
Journal of Cosmology and Astroparticle Physics. 2013:017-017
We consider a model of preheating where the coupling of the inflaton to the preheat field is modulated by an additional scalar field which is light during inflation. We establish that such a model produces the observed curvature perturbation analogou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78be89567fda67d269ed2d181dfd985e
https://doi.org/10.1088/1475-7516/2013/03/017
https://doi.org/10.1088/1475-7516/2013/03/017