IX Conference of Young Scientists "Problems of Theoretical Physics"

4-5 December 2018
Bogolyubov Institute for Theoretical Physics of the National Academy of Sciences of Ukraine
Europe/Kiev timezone

The electroweak phase transition in a spontaneously magnetized vacuum

5 Dec 2018, 16:20
20m
Oral Physics of Nuclei and Elementary Particles

Speaker

Pavlo Minaiev (Oles Honchar Dnipro National University)

Description

We investigate the electroweak phase transition in the Standard Models with accounting for the spontaneous vacuum magnetization. It is known that for the mass of Higgs boson grater then 75 GeV, the electroweak phase transition is second order. But according to Sakharov's conditions for the formation of the baryon asymmetry of the Universe, it should be strong first order. The spontaneously generated fields are temperature dependent and they have an influence on the phase transition.
Chromomagnetic fields $B_3$ and $B_8$ have to be created spontaneously in the gluon sector of QCD at temperature $T > T_d$ higher the deconfinement temperature $T_d$. Usual magnetic field $H$ should also be spontaneously generated because of quark-loop. For $T$ near $T_{EW}$, this field should be present too, so they can change the behavior of phase transition.
The critical temperature for the electroweak phase transition is estimated in Standart model and in the scalar theory. The field strengths $B_3(T)$, $B_8(T)$ and $H(T)$ at relevant temperatures are also estimated.

Primary authors

Prof. Vladimir Skalozub (Oles Honchar Dnipro National University) Pavlo Minaiev (Oles Honchar Dnipro National University)

Presentation Materials

There are no materials yet.