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 investigates the density modulations in a zero-temperature interacting Fermi gas induced by a moving impurity, demonstrating that strong interactions enable the propagation of collective zero sound modes above a specific velocity threshold and analyzing how these oscillations depend on the interaction potential's strength, range, and shape.
This paper establishes a gauge-invariant response theory for open quantum systems by deriving the Ward-Takahashi identity to demonstrate that gauge invariance holds independently of particle-number conservation, leading to the prediction of diffusive collective modes in dissipative BCS superconductors.
This paper proposes and numerically validates an off-diagonal dissipative response protocol that detects spin-charge separation in 1D systems by measuring a universal temporal crossover in the response of unperturbed spins to the dissipation of opposite-spin particles, where the resulting coefficients directly encode the anomalous dimensions and velocities of fractionalized excitations.
This paper proposes a field-theoretical framework analogous to the BEC-BCS crossover in ultracold atoms to explain the hadron-quark crossover in dense matter, demonstrating that a tripling fluctuation effect can simultaneously account for the observed peak in the speed of sound and the baryon momentum-shell structure characteristic of quarkyonic matter.
This paper demonstrates the efficient rapid optical transport of a cold ytterbium gas over 34 cm using a moving Bessel beam lattice, successfully preserving a significant fraction of atoms to achieve Bose-Einstein condensation and enabling fast preparation for large-scale quantum applications.
This paper proposes a novel method using rotation-transport on an atom chip to adiabatically move a Bose-Einstein condensate close to a surface, enabling the measurement of the Casimir-Polder force coefficient in the retarded regime by analyzing the cloud's lifetime and tunneling rate with an estimated 10% relative uncertainty.
This paper reports the first experimental realization of a synthetic Hall torus using a spinor Bose-Einstein condensate in a ring trap, where cyclic coupling of spin states creates a synthetic dimension with magnetic flux that induces quantized azimuthal density modulations and enables the emulation of Thouless charge pumping in a curved topological geometry.
This paper introduces "dissipative spectroscopy," a framework utilizing controlled dissipation and driven oscillation-dissipation resonance to extract spectral information from quantum systems, enabling the identification of soft modes near critical points, the prediction of macroscopic order emergence, and the characterization of memory effects in both equilibrium and nonequilibrium regimes.
This paper establishes an optimal second-order lower bound for the ground state energy density of a three-dimensional dilute Fermi gas with positive, compactly supported interactions, where the error term matches the order of the next correction predicted by the Huang-Yang conjecture.
By dynamically driving a dysprosium dipolar Bose-Einstein condensate across the supersolid-superfluid phase transition, researchers discovered that the resulting robust nonequilibrium state exhibits self-similar wave turbulence, a phenomenon significantly enhanced by the supersolid's ability to sustain higher momenta associated with the roton minimum.