639 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 presents a variational method using the two-boson reduced density matrix to accurately calculate the ground-state energies, densities, and correlation functions of one-dimensional harmonically trapped bosons across a wide range of particle numbers ( to ) and interaction strengths, effectively bridging the gap between few-body and mean-field regimes.
The authors propose a new thermometry method combining correlation data and high-temperature expansion to analyze a Kagome lattice Rydberg simulator, concluding that current experimental temperatures and entropies are still too high to reach the predicted quantum spin liquid regime.
This paper presents an analytical description of collisional decoherence in a Bose-Einstein condensate double-well accelerometer, deriving the mathematical link between density matrix decay and phase fluctuations while quantifying the frequency shift and sensitivity caused by the interplay of weak interactions and external acceleration.
This paper proposes a method to realize spin-2 Floquet spinor Bose-Einstein condensates by engineering quadratic Zeeman energy, demonstrating that driving-parameter-dependent Bessel functions renormalize spin-flip interactions to significantly enrich the system's ground states and presenting the resulting phase diagrams in the space of driving parameters.
This paper establishes a rigorous, model-independent criterion for finite-temperature quantum adiabaticity in driven many-body systems by deriving bounds on mixed-state fidelity that reveal a universal scaling where the threshold driving rate factorizes into zero-temperature system-size contributions and a temperature-dependent factor that transitions from unity at low temperatures to linear behavior at high temperatures.
This paper demonstrates that magnetic fields can tune the interactions between alkaline-earth Rydberg atoms to realize effective XXZ quantum spin models, revealing unique anisotropy behavior in Yb due to strong spin-orbit coupling and predicting the emergence of folded XXZ and supersolid phases in one- and two-dimensional systems.
This paper demonstrates that exact condensate-pair eigenstates in Fermi and hardcore Bose Hubbard ladders share identical forms due to the equivalent statistics of local pairs, revealing a mechanism for Hilbert-space fragmentation and extending these findings to two-layer systems.
This paper investigates the collective excitation spectra and stability of nonequilibrium polariton supersolids, demonstrating that spontaneously broken symmetries give rise to gapless Nambu-Goldstone modes and that attractive interactions mediated by the excitonic reservoir are essential for stabilizing the phase in semiconductor metasurfaces.
This paper introduces the chiral Dicke model, a generalized light-matter system with inherent continuous symmetry, and demonstrates that it exhibits robust symmetry-breaking superradiant phases and a unique "multiversality" phenomenon where distinct universality classes govern the same phase transition depending on the parameter path.
This paper demonstrates that protocols for generating quantum resources and charging quantum batteries can be mutually beneficial, proposing a dual-use superconducting circuit hardware that dynamically switches between sensing and energy-storage functions without additional hardware costs.