192 citations · 529 across the 10 of their papers we have counts for
8 papers · 1 filter
Superfluid-droplet crossover in a binary boson mixture on a ring: Exact diagonalization solutions for few-particle systems in one dimension
L. Chergui, J. Bengtsson, J. Bjerlin +3
We investigate the formation of self-bound quantum droplets in a one-dimensional binary mixture of bosonic atoms, applying the method of numerical diagonalization of the full Hamil…
Observing the emergence of a quantum phase transition -- shell by shell
Luca Bayha, Marvin Holten, Ralf Klemt +6
Many-body physics describes phenomena which cannot be understood looking at a systems' constituents alone. Striking manifestations are broken symmetry, phase transitions, and colle…
Dipolar particles in a double-trap confinement: Response to tilting the dipolar orientation
J. Bjerlin, J. Bengtsson, F. Deuretzbacher +2
We analyze the microscopic few-body properties of dipolar particles confined in two parallel quasi-one-dimensional harmonic traps. In particular, we show that an adiabatic rotation…
Spin-chain model for strongly interacting one-dimensional Bose-Fermi mixtures
F. Deuretzbacher, D. Becker, J. Bjerlin +2
Strongly interacting one-dimensional (1D) Bose-Fermi mixtures form a tunable XXZ spin chain. Within the spin-chain model developed here, all properties of these systems can be calc…
Few-body precursor of the Higgs mode in a superfluid Fermi gas
J. Bjerlin, S. M. Reimann, G. M. Bruun
We demonstrate that an undamped few-body precursor of the Higgs mode can be investigated in a harmonically trapped Fermi gas. Using exact diagonalisation, the lowest monopole mode…
Antiferromagnetic Heisenberg Spin Chain of a Few Cold Atoms in a One-Dimensional Trap
Simon Murmann, Frank Deuretzbacher, Gerhard Zürn +5
We report on the deterministic preparation of antiferromagnetic Heisenberg spin chains consisting of up to four fermionic atoms in a one-dimensional trap. These chains are stabiliz…
Density functional theory for strongly-correlated bosonic and fermionic ultracold dipolar and ionic gases
F. Malet, A. Mirtschink, C. B. Mendl +4
We introduce a density functional formalism to study the ground-state properties of strongly-correlated dipolar and ionic ultracold bosonic and fermionic gases, based on the self-c…
Quantum magnetism without lattices in strongly interacting one-dimensional spinor gases
F. Deuretzbacher, D. Becker, J. Bjerlin +2
We show that strongly interacting multicomponent gases in one dimension realize an effective spin chain, offering an alternative simple scenario for the study of one-dimensional qu…