Hamiltonian truncation tensor networks: a new technique for the simulation of 1+1D quantum field theories

22.05.2024 14:00 – 15:00

The classical simulation of quantum field theories (QFT) is a challenging problem. We present an efficient numerical method for the study of 1+1D QFT, based on the combination of Hamiltonian truncation and tensor network techniques, which is suitable for the study of low-energy eigenstates and out-of-equilibrium dynamics. Applications of the method to the sine-Gordon and massive Schwinger models show that, despite its relatively high computational cost, it dramatically improves accuracy compared to exact diagonalization results, extends the accessible part of the phase diagram of the models, and allows the observation of quench dynamics and equilibration.

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Bâtiment: Ecole de Physique

Room 234

entrée libre