Publications de Andrey Shkerin

Q-holes

We consider localized soliton-like solutions in the presence of a stable scalar condensate background. By the analogy with classical mechanics, it can be shown that there may exist solutions of the nonlinear equations of motion that describe dips or rises ...

Springer Nature2016

Toward the correspondence between Q-clouds and sphalerons

Andrey Shkerin

Non-linear classical equations of motion may admit degenerate solutions at fixed charges. Whereas the solutions with lower energies are classically stable, those with larger energies are unstable and are referred to as Q-clouds. We consider a theory in whi ...

Elsevier2015

On stability of electroweak vacuum during inflation

Sergey Sibiryakov, Andrey Shkerin

We study Coleman-De Luccia tunneling of the Standard Model Higgs field during inflation in the case when the electroweak vacuum is metastable. We verify that the tunneling rate is exponentially suppressed. The main contribution to the suppression is the sa ...

Elsevier2015