665 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 proves that for a one- or two-dimensional Fermi gas with short-range attractive interactions in a confining potential, both the ground-state energy and the ground states themselves (via Husimi functions) converge to their Thomas-Fermi counterparts in the large particle number limit.
This paper leverages Generalized Hydrodynamics and the Thermodynamic Bethe Ansatz to derive exact universal relationships and analytical approximations for the Drude weights of one-dimensional continuous integrable quantum gases, while proposing and validating experimental protocols to measure these transport properties.
This paper presents a quantitative theoretical framework based on the self-consistent theory of localization that accurately describes the energy-resolved transport of ultracold atoms across the three-dimensional Anderson transition, successfully benchmarking against numerical simulations and explaining experimental density profiles by distinguishing the contributions of Bose-condensed and thermal atoms.
This study investigates how dipolar interactions in atomic Josephson junctions, modeled by an extended Bose-Hubbard Hamiltonian with nearest-neighbor pair tunneling, fundamentally alter both the equilibrium phase diagram—inducing parity modulations and shifting critical points—and the dynamical behavior, including macroscopic quantum self-trapping and dynamical quantum phase transitions.
This paper utilizes a microscopic normal-mode approach to demonstrate how the interplay between the Heisenberg uncertainty principle and the Pauli exclusion principle shapes the zero-point energy of a unitary Fermi gas, revealing a superfluid state characterized by squeezed uncertainty and suppressed Pauli blocking.
Using ultracold atoms in an optical lattice, the authors experimentally demonstrate pseudo-fermionization and chiral binding in one-dimensional anyons by preparing ground states of the anyon-Hubbard model through Hamiltonian engineering and adiabatic manipulation, thereby bridging theoretical predictions with observable signatures in both equilibrium and non-equilibrium settings.
This paper demonstrates that in a strongly interacting one-dimensional Bose-Hubbard model, doublon-holon exchange drives slow, non-ergodic correlation spreading via domain-wall excitations, a phenomenon further suppressed by parabolic traps and accurately described by mapping the system to an antiferromagnetic transverse-field Ising model.
This paper numerically investigates the impact of inhomogeneous, long-range interactions within a hybrid Harper-Hofstadter system utilizing a synthetic dimension of harmonic trap states, revealing familiar vortex and Meissner phases in ladder geometries while uncovering novel ground states like the "Meissner stripe" in two-dimensional models.
This paper establishes a rigorous, universal framework using Bott index vectors formulated via position operator polynomials to exactly characterize chiral-symmetric higher-order topological phases and their zero-energy corner states across arbitrary system shapes, overcoming the limitations of previous invariants like multipole moments.
This paper theoretically demonstrates that Bell states can be engineered in multi-component ultra-cold atomic gases by controlling inter-particle interactions via Feshbach resonances, where two distinguishable impurities immersed in a bosonic bath form spatially entangled bipolaron states through mediated interactions that can be optimized by tuning the bath's size, mass, and intraspecies interactions.