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 study employs Hartree-Fock-Bogoliubov theory to map the finite-temperature phase diagram of coherently coupled Bose-Einstein condensates, identifying critical lines and characterizing collective mode behaviors that reveal the progressive suppression of ferromagnetic order through both Rabi coupling and thermal effects.
This paper presents an optimized approach for high-fidelity two-qubit collision gates in ultracold fermionic Lithium atoms within optical lattices, utilizing a momentum-dependent interaction model that surpasses standard Fermi-Hubbard simulations to enable tailored applications in quantum chemistry and simulation.
This paper presents a theoretical study demonstrating that magnetic domain walls in spin-1/2 Bose-Einstein condensates act as tunable scatterers for linear waves, where reflection and transmission coefficients depend solely on the total twist angle and exhibit distinct scattering regimes, resonances, and channel transitions governed by the interplay between kinetic and Zeeman energies.
This paper investigates the Josephson dynamics of two-dimensional Bose-Einstein condensate mixtures in dual-core traps by incorporating Lee-Huang-Yang quantum fluctuation corrections, revealing distinct regimes of macroscopic quantum tunneling, self-trapping, and bifurcation behaviors in homogeneous systems, as well as the oscillation frequencies, Andreev-Bashkin drag, and stability characteristics of quantum droplets and vortices in inhomogeneous settings.
This paper establishes a Hamiltonian framework for vortex clusters on a flat torus using the Schottky-Klein prime function, deriving a universal small-cluster expansion that reduces collective dynamics to a closed description governed by a single complex quadrupole moment, a prediction validated by numerical simulations.
This paper proposes a universal critical scaling rate framework based on Landau's theory to analyze how superradiant phase transitions in two-order-parameter systems can either enhance or suppress fermionic pairing, as demonstrated through the two-mode Rabi and 1D Fermi Dicke models.
Researchers utilized a 56-qubit trapped-ion quantum computer to digitally simulate a 2+1D lattice gauge theory, successfully observing real-time nonperturbative phenomena such as glueball-like excitations and multi-order string breaking, thereby demonstrating genuine higher-dimensional confinement dynamics.
This paper reports the first experimental observation of genuine D string dynamics on a trapped-ion quantum computer, demonstrating that a tunable plaquette term is essential for enabling dynamical gauge fields, photon-like propagation, and the spread of matter creation across a two-dimensional lattice.
This paper presents an experimental scheme for a programmable, dynamic two-dimensional quasiperiodic optical lattice with ultracold atoms that achieves significant phase noise suppression and high modulation bandwidth, enabling full translational and phasonic control to explore complex quantum dynamics in quasicrystals.
This paper presents a novel, scalable Fresnel zone plate design that combines the high resolution of static plates with the dynamic reconfigurability of spatial light modulators to generate versatile atomic waveguides ideal for ultracold atom Sagnac interferometry.