Beecroft building

Condensed Matter Theory Forum - Dr Carolin Wille

16 Feb 2022
Seminars and colloquia
Simpkins Lee
Martin Wood Complex, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU

Dr Carolin Wille

Seminar series
CMT Forum
Knowledge of physics?
Yes, knowledge of physics required

An effective field theory for random matchgate tensor networks

Generic tensor networks in dimensions larger than two can not be contracted efficiently. Matchgate tensor networks, deriving their name from applications in the graph theoretic problem of perfect matchings (dimer coverings), are an exception to this rule. Hence, they provide toy models amenable to numerical studies and have been considered, e.g., in the context of holographic dualities. In this talk, I built upon the identification of matchgates with free (Gaussian) fermionic tensors to devise an effective field theory description of random matchgate tensor networks in terms of a non-linear super matrix model and compare its predictions to numerical results.

A zoom link will be available for this hybrid talk. Please contact Max McGinley ( if you wish to join online.