Ogata's construction of an index for SPT phases of quantum spin chains.

Bruno Nachtergaele (UC Davis)

Oct 04. 2022, 09:00 — 10:10

In a series of recent works, Ogata constructs invariants for SPT phases for quantum spins and fermions in one and two dimensions. I explain the simplest situation of spin chains and make the connection with the special case of systems with MPS ground states for which the same index was previously known from work by other authors.

(blackboard talk)

Further Information
ESI Boltzmann Lecture Hall
Associated Event:
Tensor Networks: Mathematical Structures and Novel Algorithms (Thematic Programme)
Frank Pollmann (TU Munich)
Norbert Schuch (U of Vienna)
Frank Verstraete (Ghent U)