3 papers
cond-mat.mes-hall2026
Heisenberg-Langevin theory of an exciton mirror
Sergueï V. Andreev
We develop a Heisenberg-Langevin theory of an exciton mirror accounting for the retardation and the long-range electron-hole exchange. A particular case of a strong transverse magn…
cond-mat.quant-gas2024
Magnetoroton in a two-dimensional Bose-Bose mixture
O. I. Utesov, S. V. Andreev
We extend our theory of slow magnons in a two-component Bose-Einstein condensate to the case of two spatial dimensions (2D). We provide a detailed discussion of polaronic correctio…
cond-mat.quant-gas2023
Coupled oscillator model of a trapped Fermi gas at the BEC-BCS crossover
Sergueï V. Andreev
We address theoretically the puzzling discontinuity of the radial quadrupole mode frequency observed in a trapped Fermi gas across the BEC-BCS crossover. We apply the scaling trans…