SU() Fermi-Hubbard model on two sites: Bethe ansatz solution and quantum phase transition of the Lipkin-Meshkov-Glick model in the large- limit
Pierre Nataf
Phys. Rev. A 111, L020201 (2025) - Published 10 February, 2025
The authors find that the SU() Fermi-Hubbard model on two sites can be mapped to the Lipkin-Meshkov-Glick model. It admits a Bethe ansatz solution and exhibits a quantum phase transition in the large- limit that could be experimentally accessible using current technologies involving SU() ultracold atoms or molecules.
Crypto-nonlocality in arbitrarily dimensional systems
Jianqi Sheng, Dongkai Zhang, and Lixiang Chen
Phys. Rev. A 111, L020202 (2025) - Published 10 February, 2025
The authors extend the crypto-nonlocal model to arbitrary dimensions while preserving well-defined local properties. The model allows for the derivation of testable inequalities that reveal incompatibilities with quantum mechanics and thus can be used to explore crypto-nonlocality in high-dimensional systems.
Improved bounds on collapse models from rotational noise of the Laser Interferometer Space Antenna Pathfinder mission
Davide Giordano Ario Altamura, Andrea Vinante, and Matteo Carlesso
Phys. Rev. A 111, L020203 (2025) - Published 18 February, 2025
The space mission LISA Pathfinder, the demonstrator for the future space-based gravitational wave detector LISA, digs again into the foundations of quantum mechanics by placing a further constraint on the Continuous Spontaneous Localizations (CSL) collapse model.
Correlated and critical phenomena in multipartite quantum non-Markovianity
Ignacio González and Ángel Rivas
Phys. Rev. A 111, L020204 (2025) - Published 25 February, 2025
The authors analyze the exact dynamics of two interacting atoms in a resonant cavity, showing how memory effects can be induced by decreasing atom-separation or by increasing the number of atoms. In order to do this, they introduce a non-singular measure to characterize Markovian to non-Markovian transitions in multipartite systems influenced by structured environments.






















