2018-11-20T23:15:55Z
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oai:digital.csic.es:10261/20823
2017-01-18T09:14:46Z
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com_10261_4
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Preheating the universe from the standard model higgs
García Figueroa, Daniel
Inflation
Preheating
Higgs
Standard model
10 pages, 1 table, 1 figure.-- PACS: 11.15.Tk, 98.80.Cq, 98.80.Bp
We discuss Preheating after an inflationary stage driven by the Standard Model (SM) Higgs field non-minimally
coupled to gravity. We find that Preheating is driven by a complex process in which perturbative and non-perturbative effects
occur simultaneously. The Higgs field, initially an oscillating coherent condensate, produces non-perturbatively W and Z
gauge fields. These decay very rapidly into fermions, thus preventing gauge bosons to accumulate and, consequently, blocking
the usual parametric resonance. The energy transferred into the fermionic species is, nevertheless, not enough to reheat the
Universe, and resonant effects are eventually developed. Soon after resonance becomes effective, also backreaction from the
gauge bosons into the Higgs condensate becomes relevant. We have determined the time evolution of the energy distribution
among the remnant Higgs condensate and the non-thermal distribution of the SMfermions and gauge fields, until the moment
in which backreaction becomes important. Beyond backreaction our approximations break down and numerical simulations
and theoretical considerations beyond this work are required, in order to study the evolution of the system until thermalization.
2010-02-08T13:02:07Z
2010-02-08T13:02:07Z
2010-02-08T13:02:07Z
Artículo
http://hdl.handle.net/10261/20823
eng
http://arxiv.org/abs/0911.1465
openAccess