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.
Inspired by recent quantum simulation experiments, this paper employs a conserving diagrammatic method to demonstrate that small hole doping in an anti-ferromagnetic Fermi-Hubbard model generates damped magnetic polaron hole pockets and softens the magnon spectrum, thereby suppressing anti-ferromagnetic correlations and qualitatively reproducing experimental lattice modulation responses associated with pseudogap physics.
This paper demonstrates that coupling non-interacting fermions forming Pauli crystals to a cavity can trigger zero-threshold superradiance, which subsequently induces a transition to a genuine quantum crystalline state through the interplay of Fermi statistics, confinement, and light-mediated interactions.
This paper presents a numerical simulation and experimental proposal for laser cooling and magneto-optical trapping of Group IV atoms, with a specific focus on tin (Sn) as a promising candidate for precision measurement applications due to its accessible Type-II transition.
This paper demonstrates that sudden-quench quantum Otto cycles utilizing simultaneous multi-parameter control significantly outperform single-parameter cycles in both net work and efficiency for engines, as well as in coefficient of performance for refrigerators, across experimentally realistic many-body systems like one-dimensional Bose gases and transverse-field Ising models.
This paper investigates the emergence and detection of Hawking radiation in a quenched 1D chiral spin chain by mapping its dynamics to a curved spacetime Dirac fermion, revealing that while the radiation spectrum exhibits greybody-like deviations, a weakly coupled qubit detector can faithfully measure the Hawking temperature, whereas strong coupling obscures the thermal signature by thermalizing with the global environment.
Using a Bose-Einstein Condensate in a momentum space lattice, researchers experimentally realized a Generalized Aubry-André model with hopping disorder, demonstrating that uncorrelated disorder enhances localization while spatially correlated disorder induces partial delocalization, thereby establishing momentum space lattices as a versatile platform for studying general disordered quantum systems.
This paper proposes an experimentally accessible scheme to engineer strong three-body interactions in programmable Rydberg atom arrays, demonstrating how these interactions fundamentally alter the system's effective Hamiltonian and emergent quantum phases to enable the simulation of a broader class of correlated models in condensed matter and high-energy physics.
This paper employs a Wigner phase-space formalism to demonstrate that the stability of superfluid currents in ring-shaped Bose-Einstein condensates arises from the quantization of angular momentum, which suppresses resonant phase-space trajectories and inhibits Landau damping, thereby providing a unified kinetic interpretation of superfluidity.
This paper proposes a statistical model combining random matrix theory and quantum defect theory to simulate ultracold molecular collision complexes, finding that while it aligns with RRKM predictions in the dense resonance limit, it reveals that sparse resonance physics is governed by threshold behavior, suggesting that traditional close-coupling calculations alone may be insufficient to explain the mystery of long-lived "sticky collisions."
This paper presents a simple and compact experimental setup for 87Rb optical tweezer arrays featuring a small vacuum system, a single cooling laser, and a flexible real-time control system, successfully demonstrating a 25x25 homogeneous trap array to make experimental quantum physics more accessible.