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 reports the experimental detection of coherent spin-dependent three-body interactions in lattice-confined spinor gases through nonequilibrium quench dynamics, demonstrating their critical role in accurately modeling atom distributions and enabling applications in quantum sensing.
This paper numerically investigates the post-quench relaxation dynamics of a one-dimensional Gross-Neveu lattice fermion model, revealing that while closed systems exhibit revivals and thermalize in the thermodynamic limit according to the Eigenstate Thermalization Hypothesis, full equilibration of finite-momentum correlations requires system-reservoir coupling and is consistent with a Generalized Gibbs Ensemble description.
This paper presents a real-time detection method for dynamical phase transitions in lattice-confined spinor gases with unknown time-variant interactions, utilizing system energy and spinor phase behaviors to overcome the limitations of traditional order parameters and offering a scalable approach for studying complex nonintegrable systems.
This paper reports the experimental observation and theoretical modeling of exceptionally slow thermalization in highly excited quasi-one-dimensional quantum gases, demonstrating that near-integrable effects delay the relaxation from a microcanonical to a canonical ensemble over several seconds.
This paper investigates the finite-temperature properties of low-dimensional bosons with three-body interactions using a Feshbach-resonance-like model, revealing a non-monotonic heat capacity behavior and providing calculations for the third virial coefficient, equation of state, and trimer depletion.
This paper demonstrates that while a two-step quenched temporal ensemble is insufficient for generating general unitary -designs, a three-step protocol utilizing random evolution times and an additional Hamiltonian quench is sufficient to achieve arbitrary -designs by imposing stronger constraints on the frame potential.
This paper extends neural-network quantum states to solve strongly interacting few-body problems in continuous space, successfully computing Efimov states and reproducing their key physical features for systems ranging from three to six identical bosons and mass-imbalanced fermions.
This paper demonstrates that, unlike classical systems where time reversibility is broken by exponentially small errors, the quantum chaos diffusion of cold atoms or ions in a harmonic trap and pulsed optical lattice can be inverted with up to 100% efficiency, offering a quantum perspective on the historic Boltzmann-Loschmidt dispute regarding irreversibility.
This paper proposes a macroscopic dynamical framework for supersolids using Onsager's irreversible thermodynamics, which introduces a momentum-bearing supersolid (lattice) component to resolve the missing mass problem and predicts distinct normal mode behaviors where the normal fluid velocity transitions from being locked to the lattice at low frequencies to becoming independent at high frequencies.
This paper demonstrates that the emergent critical behavior and algebraic density decay observed in weakly dissipative lattice Fermi gases also occur in continuum space, where the study of various reaction-diffusion processes reveals temperature-independent asymptotic exponents and a mean-field directed percolation phase transition.