658 papers
This category explores the fascinating world of quantum gases, where scientists cool atoms to temperatures near absolute zero to create exotic states of matter. In these extreme conditions, individual atoms begin to behave like a single giant wave, revealing strange quantum effects that are usually hidden in our everyday warm world. These experiments help researchers understand the fundamental rules governing matter and could one day lead to revolutionary new technologies like ultra-precise sensors or quantum computers.
On Gist.Science, we process every new preprint in this field directly from arXiv to make these complex discoveries accessible to everyone. Our team provides both plain-language overviews for the curious mind and detailed technical summaries for experts, ensuring you get the full picture without getting lost in the jargon. Below are the latest papers from arXiv in Cond-Mat — Quant-Gas, freshly summarized and ready for you to explore.
This study reveals that while the onset of chaos in the one-dimensional Bose-Hubbard model induces a sub-ballistic regime in the correlation transport distance due to long-time tails and front amplitude decay, the correlation front itself maintains ballistic propagation across all interaction strengths, offering a more nuanced understanding of correlation dynamics beyond simple light-cone models.
This paper demonstrates that the interplay between microwave shielding and dipolar interactions in polar molecular gases naturally generates a synthetic mutual gauge field that couples to the relative motion of molecule pairs, thereby breaking time-reversal symmetry in their collective spatial dynamics.
This paper presents a mean-field study of the finite-temperature phase diagram of the disordered Extended Bose-Hubbard model, revealing how thermal fluctuations compete with quantum effects to melt Mott insulator and charge-density-wave phases into normal fluids or Bose glasses, with disorder further suppressing the stability of these insulating states.
This paper introduces a stable, parton-inspired trial wavefunction with anomalous BCS-like correlations that accurately describes the ground states and continuous transition between superfluid and fractional Chern insulator phases in a hard-core boson model, confirming a projective symmetry-protected gap closure mechanism.
The authors develop a Monte Carlo sampling algorithm to numerically evaluate the finite-temperature single-particle Green's function and spectral function for the repulsive Lieb-Liniger model across all interaction strengths and temperatures, including generalized Gibbs ensembles, with results showing excellent agreement against known limits.
This paper proposes a scalable method to extract transport coefficients, such as the Hall response, in gapped quantum systems by reconstructing them from local static ground-state currents measured in quantum simulators, thereby bypassing the need for external forcing and time-resolved measurements.
This study utilizes exact diagonalization of spectral form factors and power spectra to demonstrate how trapped interacting rotating bosons transition from integrable or pseudo-integrable behavior in moderate interaction regimes to strong quantum chaos consistent with the Gaussian orthogonal ensemble in strong interaction regimes, driven by the interplay between interaction strength and rotational angular momentum.
This paper investigates the one-dimensional scattering of a weakly bound dimer from a hard wall by computing phase shifts and reflection coefficients across various energies and mass ratios, while analytically deriving low-energy consistency with prior work, logarithmic mass-ratio dependencies via the Born-Oppenheimer approximation, and high-energy dissociation probabilities and angular distributions.
This paper presents a third-order expansion of the Wigner-Kirkwood commutation function approximated via a diagonal position-space method to enable Metropolis Monte Carlo simulations of liquid Lennard-Jones He below 10 K.
This paper characterizes Feshbach resonances in all lithium isotopologues by refining interaction potentials with spectroscopic data and threshold measurements, revealing that the heteronuclear system exhibits narrow, triplet-dominated resonances distinct from its homonuclear counterparts, thereby establishing a foundation for creating ultracold molecules across all isotopologues.