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Shinsei Ryu (Princeton University)
Tuesday 14 October 2025, 10:00-11:30
Higher Berry Phases, Tensor Networks, and Boundary Conformal Field Theory
â ī¸ Important: BID - Quantum field theory with boundaries, impurities, and defects
- đ¤ Speaker: Shinsei Ryu (Princeton University)
- đ Date & Time: Tuesday 14 October 2025, 10:00 - 11:30
- đ Venue: Seminar Room 2, Newton Institute
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Abstract
The higher Berry phase is a generalization of the Berry phase in quantum mechanics to extended quantum systems, such as quantum many-body systems on spatial lattices and quantum field theories. In this talk, I will describe how higher Berry phases can be defined and calculated for short-range entangled (invertible) quantum many-body systems using tensor networks, such as matrix product states and projected entangled pair states. I will also present a complementary formulation within the framework of quantum field theory, focusing in particular on boundary conformal field theory in 1+1 dimensions.
Series This talk is part of the Isaac Newton Institute Seminar Series series.
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