3 papers
cond-mat.stat-mech2026
Compressed minimum-purity time evolution for late-time quantum dynamics
Moksh Bhateja, Jonas B. Rigo, Markus Schmitt
Unitary time evolution of initially simple quantum many-body states rapidly generates entanglement and complex correlations, which limits direct numerical simulations. The late-tim…
cond-mat.quant-gas2025
Strong-coupling RPA theory of a Bose gas near the superfluid--Mott-insulator transition: universal thermodynamics and two-body contact
Nicolas Dupuis, Moksh Bhateja, Adam Rançon
We present a strong-coupling expansion of the Bose-Hubbard model based on a mean-field treatment of the hopping term, while onsite fluctuations are taken into account exactly. This…
cond-mat.quant-gas2025
Two-body contact of a Bose gas near the superfluid--Mott-insulator transition
Moksh Bhateja, Nicolas Dupuis, Adam Rançon
The two-body contact is a fundamental quantity of a dilute Bose gas that relates the thermodynamics to the short-distance two-body correlations. For a Bose gas in an optical lattic…