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 paper introduces a canonical formalism for analytically computing quantum fluctuations in the positions, velocities, norms, and phases of soliton and breather solutions within integrable partial differential equations, specifically applying it to nonlinear Schrödinger equation models under coupling-constant quenches with both white-noise and correlated-noise vacuum states.
This paper introduces a phenomenological model for decaying Bose polarons based on a minimal variational wave function and complex interaction strength, which successfully explains the significant line broadening observed in strong-interaction experiments by accounting for the decay of single-boson correlated states into multi-boson states.
This paper resolves the intrinsic gauge ambiguities of the Berry connection in non-Hermitian systems by introducing a covariant formalism based on the Hilbert space metric tensor, which yields a uniquely defined, Hermitian connection that consistently recovers standard geometric phases and topological invariants while eliminating the complexities of the conventional biorthogonal approach.
This paper investigates the time- and momentum-resolved dynamics of matter waves in disordered potentials under uniform SU(2) gauge fields by deriving a disorder-averaged density matrix that accurately describes short-time spin-momentum relaxation and coherent backscattering phenomena across various disorder and gauge field strengths.
This paper experimentally determines the ground-state scalar and vector polarizabilities of Dy near 530 nm by exploiting strong spin-dependent light shifts, providing results that agree with theoretical calculations and offering essential data for optimizing single-atom trapping in optical tweezer arrays.
This paper constructs a mapping between stationary solutions of nonlinear Schrödinger equations with real and complex potentials to derive exact solutions with real energies, specifically applying this framework to damped quantum harmonic oscillators and dissipative periodic solitons.
This paper introduces a framework that constructs a constrained Hamiltonian with auxiliary degrees of freedom to describe generic nonreciprocal interactions, thereby enabling the application of conventional statistical mechanics and Hamiltonian engineering tools to diverse non-equilibrium systems.
This paper establishes a unified theoretical framework linking orbital and heat magnetizations to experimentally accessible excitation spectra via generalized sum rules and chiral thermoelectric probes, enabling the direct measurement of these ground-state properties through dichroic measurements in quantum-engineered platforms.
This paper proposes a general dissipative strategy that couples a time-periodically driven quantum system to a tailored thermal bath to suppress Floquet heating and stabilize gapped many-body ground states, such as Mott insulators, in a non-equilibrium steady state.
This paper presents a unified hydrodynamic framework describing the anisotropic two-sound spectrum in stripe-phase supersolids formed by ultracold dipolar gases and spin-orbit-coupled BECs, highlighting how the lack of Galilean invariance in the latter case uniquely alters the identification of the normal density component.