225 citations · 642 across the 13 of their papers we have counts for
13 papers
Comment on "Consistent thermostatistics forbids negative absolute temperatures"
Ulrich Schneider, Stephan Mandt, Akos Rapp +4
In this comment we argue that negative absolute temperatures are a well-established concept for systems with bounded spectra. They are not only consistent with thermodynamics, but…
Absence of quasiclassical coherence in mean-field dynamics of bosons in a kinetically frustrated regime
Akos Rapp
We study numerically the dynamics of bosons on a triangular lattice after quenching both the on-site interactions and the external trapping potential to negative values. In a simil…
Mean-field dynamics to negative absolute temperatures in the Bose-Hubbard model
Akos Rapp
We apply time-dependent Gutzwiller mean-field theory to provide a qualitative understanding for bosons in optical lattices that approach states corresponding to negative absolute t…
Ultracold Lattice Gases with Periodically Modulated Interactions
Akos Rapp, Xiaolong Deng, Luis Santos
We show that a time-dependent magnetic field inducing a periodically modulated scattering length may lead to interesting novel scenarios for cold gases in optical lattices, charact…
Asymptotic scattering and duality in the one-dimensional three-state quantum Potts model on a lattice
Akos Rapp, Peter Schmitteckert, Gabor Takacs +1
We determine numerically the single-particle and the two-particle spectrum of the three-state quantum Potts model on a lattice by using the density matrix renormalization group met…
Quantum Simulators at Negative Absolute Temperatures
Akos Rapp
We propose that negative absolute temperatures in ultracold atomic clouds in optical lattices can be used to simulate quantum systems in new regions of phase diagrams. First we dis…