A Panorama of Tensor Networks: from Condensed Matter to Quantum Field Theory, Holography and Beyond

Simulating interfaces with tensor networks

8 Oct 2025, 12:30

15m

Collegium Nowodworskiego (Jagiellonian University)

Contributed Talk

Speaker

Laurens Vanderstraeten (Université Libre de Bruxelles)

Description

I will discuss different approaches for simulating the roughening transition for the interface in the ferromagnetic Ising model. These approaches start from variational PEPS wavefunctions for the bulk, which are then glued together to form an interface configuration. I will consider both the 3-D classical version and the 2-D quantum version; for the former I can compare to very accurate Monte-Carlo simulations, for the latter I will benchmark to cylinder-MPS simulations. These approaches can be applied very widely to study interfaces in 3-D classical and 2-D quantum many-body systems.