Phase transitions at preheating
نویسندگان
چکیده
منابع مشابه
Phase Transitions at Preheating
Symmetry restoration processes during the non-equilibrium stage of “preheating” after inflation is studied. It is shown that symmetry restoration is very efficient when the majority of created particles are concentrated at energies much smaller than the temperature T in equilibrium. The strength of symmetry restoration measured in terms of the equivalent temperature can exceed T by many orders ...
متن کاملBaryon number non-conservation and phase transitions at preheating
There are well-known reasons to believe that inflation took place and was followed by reheating to some temperature T R . Before a thermal equilibrium was reached, the coherent oscillations of the inflaton could create the environment in which a resonant non-thermal production of particles could rapidly transfer energy from the inflaton to the other fields. This stage, known as preheating [1], ...
متن کاملPhase transitions from preheating in gauge theories
We show by studying the Abelian Higgs model with numerical lattice simulations that nonthermal phase transitions arising out of preheating after inflation are possible in gauge-Higgs models under rather general circumstances. This may lead to the formation of gauged topological defects and, if the scale at which inflation ends is low enough, to electroweak baryogenesis after preheating.
متن کاملPreheating and Phase Transitions in Gauge Theories
It has recently been suggested that the baryon washout problem of the standard electroweak baryogenesis scenario could be avoided if inflation ends with a period of parametric resonance at a low enough energy density. I present results of numerical simulations in which this process was studied in the Abelian Higgs model. Our results show that because of the masslessness of the gauge field, the ...
متن کاملFirst-order nonthermal phase transition after preheating
During preheating after inflation, parametric resonance rapidly generates very large fluctuations of scalar fields. In models where the inflaton field φ oscillates in a double-well potential and interacts with another scalar field X, fluctuations of X can keep the φ→ −φ symmetry temporarily restored. If the coupling of φ to X is much stronger than the inflaton self-coupling, the subsequent symm...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics Letters B
سال: 1996
ISSN: 0370-2693
DOI: 10.1016/0370-2693(96)00297-3