3 papers
cond-mat.quant-gas2026
Ground state of the Hubbard model with spin-dependent linear potential
Jacek Dobrzyniecki, Thomas Busch
We investigate the competition between attractive spin-spin interactions and spin-separating external forces in the ground state of a one-dimensional Fermi-Hubbard model. We consid…
quant-ph2025
Tunable two-species spin models with Rydberg atoms in circular and elliptical states
Jacek Dobrzyniecki, Paula Heim, MichaÅ Tomza
We propose a scheme for constructing versatile quantum simulators using ultracold Rydberg atoms in long-lived circular and elliptical states. By exciting different subspaces of int…
cond-mat.quant-gas2024
Exact dynamics of two ultra-cold bosons confined in a one-dimensional double-well potential
Jacek Dobrzyniecki, Tomasz SowiÅski
The dynamics of two ultra-cold bosons confined in a one-dimensional double-well potential is studied. We compare the exact dynamics governed by a full two-body Hamiltonian with the…