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 proves that under fundamental physical principles, any quantum system coupled to a scale-invariant environment decoheres uniquely as an "unparticle bath" characterized by a single scaling dimension, a framework validated by experimental data and unified across diverse physical regimes from condensed matter to cosmology.
This paper demonstrates that the one-dimensional Yang-Gaudin model with two-body loss is exactly solvable for both bosons and fermions, revealing that dissipation uniquely reverses the stability hierarchy of spin configurations by favoring antiferromagnetic-like states in bosonic systems and ferromagnetic-like states in fermionic systems.
This paper proposes an interference-interaction-engineered cavity-QED scheme that utilizes tunable spin-exchange interactions and geometric phases to programmably suppress lower-order excitations and selectively enhance the emission of high-purity single-, two-, and three-photon bundles.
This paper systematically investigates dark solitons in nonlinear Su-Schrieffer-Heeger lattices, revealing that these intensity dips on a nonzero background are robust against the linear band structure and can exhibit linear stability when intracell coupling significantly exceeds intercell coupling.
This paper computes the efficiency of reversible Stirling engines across diverse working substances, identifying that regeneration can drive the efficiency toward the Carnot limit when the fixed-volume heat capacity is volume-independent, while demonstrating that for holographic CFTs dual to AdS black holes, the efficiency asymptotically approaches the Carnot value in the large-potential limit.
This paper introduces a novel, numerically exact coupled-channels method for calculating the complex three-body scattering hypervolume in ultracold identical bosonic systems by utilizing realistic multichannel molecular potentials and off-shell transition matrices, demonstrated through a benchmark application to spin-polarized potassium-39.
This paper reports the first experimental observation of strong-to-weak spontaneous symmetry breaking (SW-SSB) in a dephased Fermi gas, utilizing a machine-learned quantum-classical estimator to detect long-range Rényi order and demonstrate how decoherence drives a sharp phase transition that extends Landau's symmetry paradigm to open quantum systems.
This paper demonstrates how to systematically renormalise non-perturbative 2PI effective action approximations for dilute Bose gases to accurately compute condensate depletion and critical behavior across temperatures, revealing a non-zero universal anomalous dimension at the phase transition that vanishes in conventional Gaussian theories.
This paper proposes an experimentally feasible scheme using spin-1/2 condensates in an optical cavity to realize a self-ordered supersolid phase characterized by undamped Goldstone modes and cavity-mediated spin-momentum-mixing interactions, offering a unique platform for generating spin-momentum squeezing and multipartite entanglement.