645 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 demonstrates that the expansion dynamics of a one-dimensional hard-core boson gas released from a domain wall in the presence of two weak links exhibit genuine quantum interference fringes and coherent patterns that deviate from standard hydrodynamic predictions, providing an exact analytic description of these effects through fermionic propagators.
This paper investigates the superfluid response of dilute bosonic fluids in two-dimensional composite optical potentials by establishing conditions for isotropy, deriving analytical expressions for Leggett's bounds to identify optimal measurement directions, and confirming these findings through numerical simulations.
This paper proposes a quasiparticle theory modeling socks as bosonic excitations in an agitated laundry condensate, explaining the universal phenomenon of missing socks through mechanisms such as Beliaev decay, Landau-Khalatnikov scattering, and dynamical Casimir pair creation.
This paper investigates the rotational phase diagram of quasi-two-dimensional Bose-Einstein condensates in power-law and hard-wall traps, revealing that while weak interactions cause discontinuous transitions between multiply-quantized vortex states and stronger interactions lead to continuous transitions to mixed states, the two confinement types exhibit distinct qualitative behaviors regarding central density stability and scaling properties.
This paper demonstrates that an isolated system of Bose particles with a broad initial energy distribution can undergo a novel form of condensation into excited collective states via stimulated scattering, where entropy increases while particle number and energy remain conserved, distinct from traditional thermalization-driven Bose-Einstein condensation.
This paper presents an open-source, third-party-free GPU-accelerated Path Integral Molecular Dynamics (PIMD) code that enables efficient, first-principles simulations of large-scale identical particle systems, successfully modeling up to 40,000 bosons and offering a promising solution to the Fermion sign problem for tens of thousands of fermions.
This paper presents a software-defined radio implementation using quadrature amplitude modulation (QAM) on an UltraScale+ RFSoC platform to generate high-fidelity phase-modulated signals that enable continuous frequency tuning in electronic sideband Pound-Drever-Hall laser locking while compensating for I/Q impairments to achieve sub-0.3% error rates.
This paper constructs models exhibiting towers of quantum many-body scars with restricted spectrum generating algebra structures and sub-volume law entanglement by utilizing tilted Néel integrable boundary states, a method extendable to two-dimensional systems.
This paper proposes an experimental scheme using periodically driven Bose-Hubbard systems with cavity-mediated interactions to induce global kinetic constraints, enabling the direct implementation of long-range multi-body interactions and efficient realization of global controlled gates like the N-qubit Toffoli gate without requiring two-body decompositions.
This paper demonstrates that while coherent driving suppresses vortices in uniform scalar Bose-Einstein condensates by breaking U(1) symmetry, a driven two-component spinor system spontaneously breaks spin symmetry to form distinct topological domain walls that interact with vortices to establish long-range order.