71 citations · 463 across the 12 of their papers we have counts for
12 papers
Spin-orbit coupled Bose-Einstein condensate in a tilted optical lattice
Jonas Larson, Jani-Petri Martikainen, Anssi Collin +1
Bloch oscillations appear for a particle in a weakly tilted periodic potential. The intrinsic spin Hall effect is an outcome of a spin-orbit coupling. We demonstrate that both thes…
Quantum states of p-band bosons in optical lattices
Anssi Collin, Jonas Larson, Jani-Petri Martikainen
We study a gas of repulsively interacting bosons in the first excited band of an optical lattice. We explore this p-band physics both within the framework of a standard mean-field…
Dynamical quantum phase transition of a two-component Bose-Einstein condensate in an optical lattice
Anssi Collin, Jani-Petri Martikainen, Jonas Larson
We study dynamics of a two-component Bose-Einstein condensate where the two components are coupled via an optical lattice. In particular, we focus on the dynamics as one drives the…
Multiband bosons in optical lattices
J. Larson, A. Collin, J. -P. Martikainen
We study a gas of repulsively interacting bosons in an optical lattice and explore the physics beyond the lowest band Hubbard model. Utilizing a generalized Gutzwiller ansatz, we f…
Energy-dependent effective interactions for dilute many-body systems
A. Collin, P. Massignan, C. J. Pethick
We address the issue of determining an effective two-body interaction for mean-field calculations of energies of many-body systems. We show that the effective interaction is propor…
Collective modes and the broken symmetry of a rotating attractive Bose gas in an anharmonic trap
A. Collin
We study the rotational properties of an attractively interacting Bose gas in a quadratic + quartic potential. The low-lying modes of both rotational ground state configurations, n…