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 predicts the existence of self-bound quantum droplets formed by a spin mixture of exciton-polaritons in atomically thin semiconductor microcavities, where tunable interactions near a biexciton Feshbach resonance balance mean-field attraction with quantum fluctuation-induced repulsion.
Using tensor network simulations on a lattice, this study characterizes the scattering dynamics of bound states and resonances in the two-dimensional quantum Ising model and demonstrates that highly-energetic collisions can induce violent false vacuum decay, leading to the spread of true vacuum bubbles.
This paper demonstrates that density-assisted hopping in repulsive Hubbard models on dimerized geometries, such as bilayers and ladders, induces effective attractive interactions in the bonding band that overcome onsite repulsion to drive a Berezinskii-Kosterlitz-Thouless transition into a complex, filling-dependent superconducting phase.
This paper investigates the quantum many-body dynamics of spin-2 Bose-Einstein condensates undergoing two-body inelastic decay, demonstrating that the system evolves into a steady state of maximum total spin mixtures and can be driven into a nonclassical steady state via quadratic Zeeman field manipulation.
This paper introduces a generalized Gross-Pitaevskii equation with logarithmic density-dependent coupling to model 2D attractive Bose systems, enabling the theoretical analysis of quantum droplets, breathing modes, quench dynamics, and universal excited states while providing a robust framework for future experimental investigations.
Using a self-consistent renormalization group approach, this paper demonstrates that strong coupling to thermal bosons can robustly enhance a superconductor's critical temperature by balancing density fluctuations and boson-induced attraction, with potential applications in cold atomic systems and van der Waals heterostructures.
Using path integral Monte Carlo simulations, this study reveals that in the cavity-mediated extended Bose-Hubbard model, the coexistence regime between superfluid and charge-density-wave phases exhibits strong metastability and a counterintuitive thermally induced crystallization when starting from a superfluid state, contrasting with the smooth melting observed from a charge-density-wave initialization.
This paper demonstrates a technique using AC Stark shifts from a microwave drive to tune Rydberg atoms into a Förster resonance, thereby enhancing interaction strength and range by shifting the scaling from to while maintaining state stability and field insensitivity.
This study employs third-order perturbation theory to demonstrate that quantum effects in square-well fluids smooth supercritical scalar curvature anomalies and shift their extrema depending on interaction range, while preserving mean-field critical exponents and revealing distinct Widom line behaviors compared to classical counterparts.
This study demonstrates that a mesoscopic Fermi gas in a high-finesse cavity exhibits a non-monotonic superradiant threshold driven by a crossover between Fermi pressure-assisted ordering and Pauli blocking, while also enabling the observation of spin-density-wave phases through spin-dependent light-induced forces.