666 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 establishes an upper bound for the ground state energy of a low-density repulsive Fermi gas that confirms the Huang-Yang conjecture, including the correction term, by constructing a trial state via quasi-bosonic Bogoliubov transformations adapted to the Fermi sea.
This paper argues that phonons in a finite superfluid Bose gas are not Goldstone bosons, but rather quantized collective vibrational modes, because the strict definition of spontaneous symmetry breaking—which requires a non-invariant ground state under symmetric Hamiltonian and boundary conditions—is not satisfied in finite systems.
Using an improved Exact Diagonalization method, this study systematically maps the ground-state phase diagram of a few repulsively interacting bosons in a one-dimensional three-species mixture, revealing unique correlation, coherence, and spatial localization properties across ideal and hard-core interaction limits.
Using an exact quantum many-body approach, this study reveals that interaction quenches in rotating two-dimensional Bose-Einstein condensates induce distinct dynamical regimes ranging from complete vortex revival to chaotic fragmentation, depending on the initial vortex configuration and the interplay between interaction strength and angular velocity.
This paper reports the first experimental observation of statistical localization in a Rydberg atom simulator of a lattice gauge theory, demonstrating that strong Hilbert space fragmentation can cause conserved quantities with nonlocal operator support to remain locally distributed and frozen in time, thereby challenging the expectation that such nonlocal laws do not impede local thermalization.
Through a combined experimental and theoretical study of ultracold Rb atoms in optical lattices, this paper reveals strongly anomalous condensate particle number fluctuations that scale super-linearly with the total atom number, a phenomenon attributed to the interplay of 2D/3D crossover geometry and interactions.
This paper demonstrates that coupling a Landau-Zener qubit to a second quantum system enables autonomous quantum dynamics to suppress non-adiabatic transitions by over two orders of magnitude, offering a novel shortcut to adiabaticity where the quantum nature of the control field is essential.
This study demonstrates that while intertube dipole-dipole interactions in nearly integrable one-dimensional Dy gases slightly alter both equilibrium properties and rapidity measurements, these opposing effects nearly cancel each other out, resulting in measured rapidity distributions that closely match predictions made without considering such interactions.
This paper demonstrates the experimental realization of quantum cellular automata on a dual-species Rydberg atom array, showing that simple global controls can drive complex many-body dynamics and generate high-fidelity entangled states, thereby offering a scalable pathway for quantum information processing.
This paper calculates the phase diagram of the half-filled Bose-Hubbard model on quasi-1D ladder lattices, demonstrating that the rung-Mott insulator phase persists to finite interaction strength with boundaries modulated by lattice connectivity, and identifies number and parity variances as key observables for distinguishing these phases in quantum-gas microscope experiments.