668 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 presents an efficient real-time method combining the Keldysh path integral with the self-consistent T-matrix approximation to directly compute spectral functions of the strongly interacting 3D Fermi gas, demonstrating improved dynamical accuracy over traditional analytic continuation and resolving debates regarding the existence of a pseudogap regime above the critical temperature.
This paper proposes efficient, practical protocols for measuring the second Rényi entropy in quantum many-body systems by linking it to Loschmidt echo sequences that eliminate the need for random-noise averaging, with demonstrated feasibility in superconducting qubit and cavity-QED platforms.
This paper reports the experimental observation and theoretical confirmation of several high partial-wave magnetic Feshbach resonances in K Bose-Einstein condensates, which are induced by dipolar spin-spin interactions and offer significant potential for studying many-body physics dominated by high partial-wave pairing.
This paper demonstrates that resonant pair-production terms in a lattice gauge theory enable the formation of stable, high-energy "repulsively bound" hadrons through a novel dynamical mechanism, a finding supported by matrix product state simulations and an effective model that suggests experimental realization on modern quantum hardware.
This paper proposes and experimentally demonstrates nonlinear quadrupole topological insulators in an electric circuit lattice, revealing the emergence of distinct nonlinear topological corner states and bulk solitons across weak and strong nonlinearity regimes.
This study experimentally demonstrates that matter-wave four-wave mixing in K Bose-Einstein condensates can be optimized by tuning atomic interactions via Feshbach resonances, revealing that the yield is maximized near the critical gas-droplet phase boundary in two-spin configurations.
This paper establishes a formal mapping between the 1D Anderson lattice and a reservoir-enhanced superconducting model to demonstrate that the metallic reservoir mediates effective long-range interactions, which in turn explains the emergence of near-long-range magnetic order and renormalized RKKY coupling in Kondo systems.
This paper proposes experimental protocols for observing single, isolated quantum many-body scars in superconducting transmon qubit architectures by utilizing trotterized cross-resonance interactions and investigating alternative signatures such as dynamical responses to local deformations and noise.
This paper proposes a flexible Raman lattice system for alkaline-earth-like atoms to demonstrate how controllable non-Hermiticity and spin-dependent potentials influence localization behaviors, critical phases, and mobility edges in quasi-periodic lattices.
By utilizing "scramblon theory" to mitigate errors caused by imperfect Hamiltonian inversion, the researchers successfully reversed quantum chaotic dynamics in a macroscopic spin system to measure the quantum Lyapunov exponent for the first time.