3 papers
cond-mat.quant-gas2025
Dimer problem on a spherical surface
A. Tononi, D. S. Petrov, M. Lewenstein
We solve the problem of a dimer moving on a spherical surface and find that its binding energy and wave function are sensitive to the total angular momentum. The dimer gets squeeze…
cond-mat.quant-gas2024
Beyond-mean-field analysis of the Townes soliton and its breathing mode
D. S. Petrov
By using the Bogoliubov perturbation theory we describe the self-bound ground state and excited breathing states of two-dimensional bosons with zero-range attractive interactio…
cond-mat.quant-gas2024
Absence of binding of heavy fermions by two light atoms in two dimensions
J. Givois, D. S. Petrov
By developing the mean-field theory valid for large , we investigate the problem of two light fermions interacting via a zero-range potential with heavy fermions in two dime…