1. fock-space correlations and many-body localisation

David Logan

Oxford University, UK

27 May 2021 Thu 5 pm

                                      IBS Center for Theoretical Physics of Complex Systems (PCS), Administrative Office (B349), Theory Wing, 3rd floor

                                      Expo-ro 55, Yuseong-gu, Daejeon, South Korea, 34126 Tel: +82-42-878-8633                     

I will discuss some aspects of many-body localisation (MBL) from a Fock-space perspective.  Two basic questions will be considered: what is the nature of the disorder in the Hamiltonian defined on the associated Fock-space graph? And what minimal properties are required for a disordered many-body system to sustain a stable MBL phase? Systems which can host a stable MBL phase are argued to belong to a class of disorder known as maximally correlated. The implications of this type of disorder for one-body localisation will also be considered.