446 citations · 1.6k across the 7 of their papers we have counts for
7 papers
Quantum phases from competing short- and long-range interactions in an optical lattice
Renate Landig, Lorenz Hruby, Nishant Dogra +4
Insights into complex phenomena in quantum matter can be gained from simulation experiments with ultracold atoms, especially in cases where theoretical characterization is challeng…
Measuring the dynamic structure factor of a quantum gas undergoing a structural phase transition
Renate Landig, Ferdinand Brennecke, Rafael Mottl +2
The dynamic structure factor is a central quantity describing the physics of quantum many-body systems, capturing structure and collective excitations of a material. In condensed m…
Real-time observation of fluctuations at the driven-dissipative Dicke phase transition
Ferdinand Brennecke, Rafael Mottl, Kristian Baumann +3
We experimentally study the influence of dissipation on the driven Dicke quantum phase transition, realized by coupling external degrees of freedom of a Bose-Einstein condensate to…
Roton-type mode softening in a quantum gas with cavity-mediated long-range interactions
R. Mottl, F. Brennecke, K. Baumann +3
Long-range interactions in quantum gases are predicted to give rise to an excitation spectrum of roton character, similar to that observed in superfluid helium. We investigate the…
Exploring Symmetry Breaking at the Dicke Quantum Phase Transition
K. Baumann, R. Mottl, F. Brennecke +1
We study symmetry breaking at the Dicke quantum phase transition by coupling a motional degree of freedom of a Bose-Einstein condensate to the field of an optical cavity. Using an…
Field-induced soft-mode quantum phase transition in LaSrCuO
J. Chang, N. B. Christensen, Ch. Niedermayer +13
Inelastic neutron-scattering experiments on the high-temperature superconductor LaSrCuO reveal a magnetic excitation gap that decreases continuously u…