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 introduces a quantic tensor train (QTT) framework that efficiently solves the Gross-Pitaevskii equation for Bose-Einstein condensates by adapting variational and gradient descent methods, achieving high-resolution simulations of ground states and nonlinear dynamics with significantly reduced computational costs compared to conventional grid-based approaches.
This paper introduces a universal, noise-agnostic control framework for open quantum systems that achieves provable robustness against arbitrary Markovian noise and near-unity fidelity without requiring prior environmental characterization, thereby bridging the gap between theoretical control design and experimental hardware constraints.
This paper proposes and experimentally demonstrates a method to directly measure energy dissipation in a linearly driven superfluid by leveraging a perturbed harmonic-potential theorem to convert center-of-mass motion into internal energy, thereby enabling the quantitative determination of dissipation and the observation of critical velocity behavior in a driven Bose-Einstein condensate.
This paper investigates the real-time buildup of short-range correlations in a nondegenerate ultracold Bose gas near a narrow Fano-Feshbach resonance by using rapid optical quenches to track two-body contact evolution, revealing long-lived atom-molecule coherence that is accurately described by a dynamical two-channel zero-range theory.
This paper proposes a complex scalar field theory defined on a comoving spacelike hypersurface that unifies the hydrodynamics of charged normal fluids, superfluids, and a novel fracton fluid phase by distinguishing them through specific chemical shift symmetries that govern charge mobility, thereby providing a UV completion to existing effective hydrodynamic theories.
This paper presents a unified mean-field description of photon Bose-Einstein condensation in dye-filled microcavities, derived from a Lindblad master equation, which reveals how driven-dissipative parameters shape an open-dissipative Bose-Einstein distribution and distinguish photonic condensates from both atomic BECs and lasers.
This paper reports the observation and modeling of chirality-induced spin currents in a weakly interacting Li Fermi gas, where a static displacement creates a handedness-dependent spin rotation that drives spin-selective currents and extends the Chirality-Induced Spin Selectivity (CISS) phenomenon to Fermi gases.
This paper systematically investigates the generation of dispersive shock waves in nonlinear Schrödinger equations with periodic potentials by employing a tight-binding approximation to reduce the system to a discrete model, where Whitham modulation theory is used to analyze rich non-convex dispersive hydrodynamic phenomena arising from the evolution of piecewise smooth initial data.
This paper synthesizes two decades of theoretical research on shell-shaped Bose-Einstein condensates to comprehensively analyze their dynamics, collective excitations, and thermodynamics, while highlighting recent experimental breakthroughs such as microgravity realizations on the International Space Station.
This paper introduces a novel many-body truncation for Gorkov self-consistent Green's function theory that combines first-order pairing correlations with third-order particle-number-conserving dynamical correlations to accurately predict the equation of state and spectral properties of infinite nuclear matter using modern chiral effective field theory Hamiltonians.