🔬 Category

cond-mat.quant-gas

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.

Direct observation of long-range many-body coherence in quasi-one-dimensional attractive Bose gases

This study experimentally demonstrates that degenerate quasi-one-dimensional attractive Bose gases, when quenched from repulsive to unstable attractive interactions, exhibit long-range phase-coherent density waves distinct from soliton trains, which can spontaneously re-establish quasi-long-range coherence upon returning to the repulsive regime through the nucleation and annihilation of density defects.

Hikaru Tamura, Sambit Banerjee, Rongjie Li, Panayotis Kevrekidis, Simeon I. Mistakidis, Chen-Lung Hung2026-03-23🔬 physics.atom-ph

From single-particle to many-body chaos in Yukawa--SYK: theory and a cavity-QED proposal

This paper introduces the Yukawa--SYK model as a unifying framework that bridges single-particle and many-body chaos through tunable interaction strengths, characterizes its intermediate dynamical regimes, and proposes a feasible optical-cavity implementation using ultra-cold atoms for experimental observation.

David Pascual Solis, Alex Windey, Soumik Bandyopadhyay, Andrea Legramandi, Philipp Hauke2026-03-23⚛️ hep-th

Generalized Nagaoka ferromagnetism accompanied by flavor-selective Mott states in an SU(NN) Fermi-Hubbard model

Using dynamical mean-field theory and quantum Monte Carlo simulations, this study reveals that the SU(NN) Fermi-Hubbard model on a hypercubic lattice exhibits generalized Nagaoka ferromagnetism at low temperatures, characterized by the emergence of flavor-selective Mott states where specific internal symmetries stabilize magnetic order through the kinetic-energy gain of doped metallic flavors.

Juntaro Fujii, Kazuki Yamamoto, Akihisa Koga2026-03-23🔬 cond-mat

Opening a gap in the dispersion of the collective excitations of a driven-dissipative condensate subject to an external coherent drive

This paper presents a minimal theoretical model demonstrating how an external coherent drive can fix the phase of a driven-dissipative condensate to open a gap in its collective excitation spectrum, while also mapping out steady-state regimes and identifying regions of dynamical instability that lead to supersolid-like modulations.

E. Stazzu, G. A. P. Sacchetto, I. Carusotto2026-03-23🔬 cond-mat

Radial selection rule for the breathing mode of a harmonically trapped gas

This paper demonstrates that within a fixed hyperangular channel of a harmonically trapped gas, the breathing mode retains exact 2ℏω2\hbar\omega radial gaps with no forbidden spectral weight due to a novel first-order cancellation of perturbations, while also deriving a Q−1Q^{-1} scaling for sum-rule estimates and noting the need for separate derivations regarding three-dimensional contact corrections.

Miguel Tierz2026-03-20🔬 physics.atom-ph

Universal Decay of Mutual Information and Conditional Mutual Information in Gapped Pure- and Mixed-State Quantum Matter

This paper establishes that the superpolynomial decay of mutual and conditional mutual information is a universal property of gapped pure- and mixed-state quantum phases in any spatial dimension, demonstrating that this behavior holds for all systems within such a phase—including chiral phases—if it holds for one, thereby refining the definition of mixed-state phases.

Jinmin Yi, Kangle Li, Chuan Liu, Zixuan Li, Liujun Zou2026-03-20🔢 math-ph

More is uncorrelated: Tuning the local correlations of SU(NN) Fermi-Hubbard systems via controlled symmetry breaking

This study demonstrates that in SU(NN) Fermi-Hubbard systems, local correlations decrease as the number of components NN increases, and that controlled symmetry breaking via a Raman field can effectively tune the system from weakly correlated SU(4) behavior back to strongly correlated SU(2) physics, revealing a rich phase diagram with a tricritical point where metal, band insulator, and Mott insulator phases coexist.

Edoardo Zavatti, Gabriele Bellomia, Matteo Ferraretto, Samuele Giuli, Massimo Capone2026-03-20⚛️ quant-ph

Vortex Retention Mediated Turbulent Transitions in Self-Gravitating Bosonic and Axionic Condensates

This study demonstrates that while both self-gravitating bosonic and axionic condensates undergo turbulent transitions from Kolmogorov to Vinen scaling during rapid spin-down, axionic condensates exhibit enhanced vortex retention that increasingly disrupts Kolmogorov scaling as interaction strength grows, driven primarily by quantum pressure during vortex detachment.

Anirudh Sivakumar, Sanjay Shukla, Rahul Pandit, Pankaj Kumar Mishra, Paulsamy Muruganandam2026-03-20🔭 astro-ph