22 papers
Emergent quantum chaos from correlations on a random graph
Mrinal Sarkar, Valerio Pagni, Tilman Enss +1
The paper shows that a one‑dimensional lattice with sparse, long‑range random bonds can produce quantum‑chaotic spectral correlations and a localization transition, even without on…
False vacuum decay in long-range interacting quantum systems
Valerio Pagni, Laura Batini, Nicolò Defenu
We formulate false-vacuum decay in a mixed-field Ising chain with interactions as a spatially nonlocal Euclidean theory featuring a fractional spatial kinetic term…
Large- with long-range interactions: integrability and resonance dynamics
Guido Giachetti, Nicolo Defenu
We study the large- dynamics of the long-range quantum model, focusing on the strong long-range regime . The dynamics of the model exhibits non-trivial features on…
Photon correlation microscopy of quantum matter
Elie Vandoolaeghe, Iñigo Lasheras, Chirag Vaswani +8
Light and matter share fundamental statistical properties, yet the experimental probes of quantum optics and many-body physics have largely evolved along separate trajectories. Whi…
Robust spin-squeezing with random interaction graphs: the lesson from universality
Andrea Solfanelli, Augusto Smerzi, Peter Zoller +1
We establish the conditions under which scalable spin squeezing can be achieved in interacting spin ensembles embedded in arbitrary, inhomogeneous graph geometries. We identify two…
Ensemble Inequivalence in Long-Range Quantum Spin Systems
Daniel Arrufat-Vicente, David Mukamel, Stefano Ruffo +1
Ensemble inequivalence occurs when a systems thermodynamic properties vary depending on the statistical ensemble used to describe it. This phenomenon is known to happen in systems…