642 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 paper presents a hybrid optical scheme combining fixed optics (axicons and prisms) with a digital micromirror device to efficiently generate high-quality, near-ideal hollow beams of various shapes, enabling the creation of highly homogeneous cold atom samples in customizable box potentials for advanced quantum many-body physics research.
This study numerically demonstrates that increasing the forcing rate in a three-dimensional Bose-Einstein condensate drives a transition from weak-wave Kolmogorov-Zakharov turbulence to a critical balance state and finally to a coherent condensate with acoustic turbulence, a regime where vortices play a marginal role, ultimately leading to a new out-of-equilibrium equation of state for the inverse cascade.
This paper presents a stable, phase-locking-free method for generating optical lattices by passing a single laser beam through a prism with n-fold symmetric facets, successfully demonstrating various configurations like triangular and ten-fold quasi-crystal lattices with minimal lattice constant variation and positional drift.
This paper introduces a simple 2D spin-1/2 model that realizes a classical U(1) fracton spin liquid with extensive ground state degeneracy, but demonstrates that perturbative quantum effects fail to restore quantum fractonic behavior due to severe Hilbert space fragmentation, resulting in either magnetic long-range order or a classical spin liquid.
This paper establishes the asymptotic behavior of the ground state energy for a dilute, repulsive spin-J Fermi gas in one dimension, demonstrating that it is determined by the ground state energy of an associated spin chain, specifically the Heisenberg antiferromagnet for spin-1/2 fermions.
This paper demonstrates that while nonanalyticities associated with dynamical quantum phase transitions in dissipative free-fermion systems can persist under purely gain or purely loss processes, they are completely smeared out as soon as both channels are simultaneously active, a phenomenon accompanied by the emergence of a nested lightcone structure in the reduced Loschmidt echo dynamics.
This paper establishes the stability criteria for dark solitons on a spherical Bose-Einstein condensate, demonstrating that beyond a sharp nonlinear threshold, they decay into vortex pairs via a universal single-mode snake instability unique to the two-dimensional surface geometry.
This study experimentally demonstrates that dysprosium atoms can be prepared in a long-lived metastable state with a large induced electric dipole moment of over 1 Debye and a reduced transition dipole moment of 7.65 Debye, enabling efficient single-photon excitation from the ground state through a three-state Stark interaction.
Using a quantum simulator of 114 Rydberg atoms arranged in a kagome array, researchers successfully adiabatically prepared and characterized a disordered, correlated liquid state that exhibits strong agreement with theoretical predictions for a gapless U(1) Dirac spin liquid.
This paper demonstrates that while mean-field theory predicts persistent macroscopic quantum self-trapping in symmetric Bose-Josephson junctions, exact quantum dynamics for any finite number of particles inevitably leads to the breakdown of this phenomenon after a finite time, with a quasi-self-trapping regime emerging only for large particle numbers due to specific spectral properties.