Fri
27
May
Correction Day - Follows a MONDAY Schedule
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Fri
27
May
SCGP: Geometrical Aspects Program Seminar: Ken Shiozaki
  •   12:00pm - 1:00pm

Title:   Adiabatic cycles in quantum spin systems

The Thouless pump is a one-parameter cycle of 1-dimensional gapped quantum systems with U(1) symmetry, which is classified by integers. In this talk, I introduce a generalization of the Thouless pump to quantum spin systems in any dimension with any finite group onsite symmetry. I show a simple model with Z_2 onsite symmetry, and how it is nontrivial via boundary degrees of freedom. Using injective matrix product state, one can construct the topological invariant in a way similar to the Berry phase. For generic space dimensions, I briefly introduce a group cohomology model by Roy=Harper and discuss its properties.

Mon
30
May
Memorial Day- No classes in session
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Mon
30
May
Memorial Day
  •  

Public holiday

Tue
31
May
SCGP: Workshop: From Representation Theory to Mathematical Physics and Back
  •  
Wed
01
Jun
First Day of LGBTQ+ Pride Month
  •  

Observance
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Wed
01
Jun
SCGP: Physics Seminar: Valentina Prilepina
  •   1:30pm - 2:30pm