2 papers
hep-th2020
Breaking BEC
A. Kovtun, M. Zantedeschi
In this work quantum corrections to the classical evolution of a relativistic scalar condensate are studied. The problem is approached by means of two different perturbative approa…
hep-th2018
Vibrational modes of Q-balls
A. Kovtun, E. Nugaev, A. Shkerin
We study linear perturbations of classically stable Q-balls in theories admitting analytic solutions. Although the corresponding boundary value problem is non-Hermitian, the analys…