3 papers
quant-ph2025
High-temperature partition functions and classical simulatability of long-range quantum systems
Jorge Sánchez-Segovia, Jan T. Schneider, Álvaro M. Alhambra
Long-range quantum systems, in which the interactions decay as , are of increasing interest due to the variety of experimental set-ups in which they naturally appear. Motiva…
quant-ph2025
Spatio-temporal tensor-network approaches to out-of-equilibrium dynamics bridging open and closed systems
Sergio Cerezo-Roquebrún, Aleix Bou-Comas, Jan T. Schneider +3
The study of many-body quantum systems out of equilibrium remains a significant challenge with complexity barriers arising in both state and operator-based representations. In this…
cond-mat.stat-mech2024
Self-congruent point in critical matrix product states: An effective field theory for finite-entanglement scaling
Jan T. Schneider, Atsushi Ueda, Yifan Liu +3
We set up an effective field theory formulation for the renormalization flow of matrix product states (MPS) with finite bond dimension, focusing on systems exhibiting finite-entang…