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 reports a 4-K cryogenic platform that utilizes high numerical aperture optics and dual-wavelength trapping to achieve 5000-second lifetimes and prepare defect-free arrays of up to 1024 atoms, significantly advancing prospects for large-scale quantum computing.
This paper investigates ultraviolet ground state transitions in dysprosium using two-dimensional shelving spectroscopy to characterize their hyperfine-isotope structure and decay strengths, thereby enabling applications in optical clocks, quantum gas microscopy, and searches for physics beyond the standard model.
This study employs numerically exact quantum Monte Carlo simulations to reveal that triangular Rydberg atom arrays exhibit anti-ferromagnetic order at specific fillings and an emergent Kosterlitz-Thouless phase driven by an order-by-disorder mechanism at half-filling, providing theoretical predictions for future experimental verification.
This paper presents a novel method for subwavelength imaging of ultracold atoms using laser-driven excited state interactions to engineer ground state population transfer, demonstrating both strong and weak imaging regimes to achieve resolutions down to 30 nm while providing a general theoretical framework for their validity.
This paper presents an all-optical method using double dressing to create spherical shell-shaped traps for ultracold atoms in microgravity, demonstrating a realistic configuration for rubidium ensembles that achieves strong transverse confinement with minimal heating.
This paper utilizes the Bethe-ansatz method to derive exact analytical results for the excitation velocities and Drude weight matrix of a one-dimensional Bose-Fermi mixture with equal masses and interaction strengths, demonstrating that the velocities are determined by the eigenvalues of the product of compressibility and Drude weight matrices.
This paper characterizes approximate vortex structures of atomic Fermi superfluids on a spherical surface under an effective monopole field by employing two Ginzburg-Landau-based constructions—geometric scaffolding and free-energy minimization—which yield vortex configurations that converge to the planar Abrikosov lattice limit as the number of vortices increases.
This paper demonstrates that a Mpemba-type effect, where a system initially farther from equilibrium relaxes faster than one closer to it, emerges in the density redistribution dynamics of a strongly interacting one-dimensional Bose gas undergoing sudden box expansion, highlighting that this phenomenon is an observable-dependent consequence of specific dynamical conditions rather than a universal law.
By advancing pairing fluctuation theory with particle-hole fluctuations and full numerical convolution to accurately model spectral broadening and pair-hole scattering, this study quantitatively demonstrates that the pseudogap in ultracold Fermi gases emerges continuously across the BCS-BEC crossover due to pairing fluctuations, achieving strong agreement with experimental data.
This study demonstrates that even weak atomic interactions in a Bose gas can significantly suppress or enhance bosonic stimulation in off-resonant light scattering by altering local atomic correlations, thereby establishing light scattering as a highly sensitive probe for ultrafast many-body correlation dynamics.