656 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 general variational method to derive density profiles and construct a universal, system-size-independent phase diagram for trapped spin-1 Bose-Einstein condensates, revealing significant qualitative differences from homogeneous systems and identifying key parameter regimes for phase transitions.
This paper introduces a tensor network framework that enables the application of large deviation theory to large monitored quantum many-body systems, successfully identifying first-order dynamical phase transitions and characterizing the coexistence of distinct dynamical phases through conditioned quantum states.
Using a zero-range model for -wave interactions, this study demonstrates that the three-body recombination rate constant for identical fermions scales as rather than the conventional , while also deriving a perturbative correction term that significantly refines the temperature and interaction dependence near resonance.
This paper establishes a comprehensive theoretical framework for coherent quantum speed limits by deriving fundamental bounds that explicitly isolate quantum coherence as a critical kinematic resource governing the rate of unitary evolution, thereby offering a new resource-theoretic perspective on time-energy uncertainty.
This paper demonstrates a novel all-optical scheme using spatially engineered vector beams to generate synthetic gauge fields in ultracold atoms, enabling the creation of angular stripe phases with a significantly expanded parameter range and tunable topologically nontrivial giant skyrmions.
Using generalized hydrodynamics, this study reveals that thermal beating in the dipole-compression modes of a harmonically trapped 1D Bose gas arises from the distinct thermal populations of particle and hole excitations, which generate two evolving oscillation frequencies that deviate from classical hydrodynamic predictions across the interaction crossover.
This paper theoretically proposes a driven-dissipative Dicke model with complex-valued couplings, realized via a driven atom tweezer array in an optical cavity, which exhibits a unique phase diagram for featuring or symmetry-breaking superradiant phases and a dynamically unstable normal phase separated by a first-order phase transition due to non-reciprocal forces.
This study demonstrates that ultracold fermions in a three-dimensional optical lattice exhibit a saturation of collisional resistivity at a value independent of interaction strength in the strongly interacting metallic regime, a phenomenon quantitatively explained by a renormalized two-body scattering matrix model.
By computing the free energy of a dilute spin-1/2 fermion gas up to third order in the scattering length and resumming specific infinite diagram classes, the authors demonstrate that including particle-hole ring contributions eliminates the predicted Stoner ferromagnetic phase transition, suggesting that such a transition in repulsive systems requires the inclusion of higher-order scattering parameters or is relevant primarily for cold atomic gases with artificially enhanced scattering lengths.
This paper demonstrates a self-referenced, drift-tolerant metrology scheme using degeneracy-lifted dual quasinormal modes in a hybrid microcavity to robustly quantify the relative populations of in-plane and out-of-plane excitons in monolayer WSe without external calibration.