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 paper establishes a spacetime picture for entanglement generation in noisy fermion chains by mapping the calculation of Renyi entropies to an SO(2N) Heisenberg spin chain, revealing a semiclassical domain-wall dynamics that transitions from diffusive to ballistic spreading upon the addition of weak interactions.
This paper details the theory of double microwave shielding, a technique using two microwave fields to suppress inelastic collisions and three-body recombination while enabling flexible tuning of dipolar interactions, thereby facilitating the creation of Bose-Einstein condensates and advancing the study of many-body physics in ultracold polar molecules.
This paper proposes a method for engineering quantum systems with tunable Bose-Hubbard Hamiltonians by utilizing off-resonant photon scattering on geometrically shaped molecular clouds to achieve geometrical frustration, long-range power-law hopping, and non-local gauge fields.
Using a quantum-gas microscope with ultracold bosonic atoms in a two-dimensional disordered lattice, researchers directly observed the Bose-glass phase by characterizing its insulating yet compressible nature, reduced phase coherence, and non-ergodic behavior through local measurements of particle fluctuations and Talbot interferometry.
This paper proposes a versatile, experimentally feasible reservoir engineering scheme using collective decay and local Hamiltonians in cavity QED to stabilize diverse highly entangled many-body states, enabling Heisenberg-limited differential quantum sensing immune to common-mode noise and the creation of symmetry-protected topological phases like the AKLT state.
This paper investigates the impact of particle-hole fluctuations on the Berezinskii-Kosterlitz-Thouless transition in two-dimensional Fermi gases across the BCS-BEC crossover, demonstrating that self-consistently including these fluctuations screens the pairing interaction and significantly reduces the transition temperature, thereby achieving quantitative agreement with experimental data and quantum Monte Carlo simulations.
This paper presents a systematic theoretical framework based on a functional-integral formulation that consistently incorporates static white-noise disorder and Gaussian pairing fluctuations to describe the BCS-BEC crossover near the critical temperature, successfully recovering established limits while providing a robust foundation for analyzing intermediate regimes in both continuum and lattice systems.
This paper demonstrates a scalable, polarization-selective quantum light modulator by engineering dual-species atom arrays to break in-plane symmetry and achieve complete reflection of specific polarization components through cooperative subradiant modes.
This paper presents the first exact microscopic derivation of the M-Wright function characterizing anomalous integrated spin current fluctuations in a one-dimensional Fermi-Hubbard model with infinitely strong repulsive interactions, thereby extending the understanding of universal transport behaviors from classical to quantum many-body systems.
This paper demonstrates that a non-equilibrium open system with weak time-reversal symmetry can exhibit non-quantized Hall conductance without an external magnetic field, as interactions with bosonic degrees of freedom and an external reservoir induce a time-reversal-breaking self-energy in the fermionic subsystem, a phenomenon that requires wave-function renormalization effects beyond a simple mass term.