5 papers
Dimensional crossover of bound complexes in a two-species Bose-Hubbard lattice: Correlations and dynamics
Deepak Gaur, Koushik Mukherjee, Stephanie M. Reimann
We study the equilibrium and nonequilibrium formation of four-particle complexes in a balanced two-species Bose-Hubbard model with repulsive intraspecies and attractive interspecie…
Vorticity-Crystalline Order Coupling in Supersolids: Excitations and Re-entrant Phases
Malte Schubert, Koushik Mukherjee, Philipp Stürmer +1
Rotation is a natural tool in ultracold gases to break time-reversal symmetry, yet its impact on the collective excitations of supersolids remains largely unexplored. We show theor…
Quantum Carpets of Higgs particles in a Supersolid
Koushik Mukherjee, Malte Schubert, Ralf Klemt +3
Supersolids formed from dipolar Bose-Einstein condensates (BECs) exhibit spontaneous density modulation while maintaining global phase coherence. This state of matter supports gapp…
Generation of wave turbulence in dipolar gases driven across their phase transitions
G. A. Bougas, K. Mukherjee, S. I. Mistakidis
Ultracold quantum gases with long-range anisotropic interactions host novel exotic phases of matter, such as supersolids, exhibiting both rigid and superfluid characteristics. The…
Decoupled sound and amplitude modes in trapped dipolar supersolids
Jens Hertkorn, Philipp Stürmer, Koushik Mukherjee +7
We theoretically investigate elementary excitations of dipolar quantum gases across the superfluid to supersolid phase transition in a toroidal trap. We show how decoupled first so…