New opportunities in Kitaev spin liquids

Seminar

QUEST Center event

No

Speaker

David Mross -Weizmann Institute of Science

Date

29/06/2023 - 13:30 - 12:30Add to Calendar 2023-06-29 12:30:00 2023-06-29 13:30:00 New opportunities in Kitaev spin liquids Spin liquids are highly-entangled phases of quantum spins that host fractional excitations. The best-known examples of such states arise in the Kitaev honeycomb model, which is fine-tuned to exhibit extensively-many conserved quantities that permit an exact solution. I will introduce the model and show that including two 'real-world' effects -- vacancies and breaking of integrability -- yield qualitatively different physical properties. Additionally, I will explain how Kitaev spin liquids could be realized with subextensively many conserved quantities by using boundary states of one-dimensional SPTs instead of local spins as building blocks. Conference room on the 0th floor of Resnick building Department of Physics physics.dept@mail.biu.ac.il Asia/Jerusalem public

Place

Conference room on the 0th floor of Resnick building

Abstract

Spin liquids are highly-entangled phases of quantum spins that host fractional excitations. The best-known examples of such states arise in the Kitaev honeycomb model, which is fine-tuned to exhibit extensively-many conserved quantities that permit an exact solution. I will introduce the model and show that including two 'real-world' effects -- vacancies and breaking of integrability -- yield qualitatively different physical properties. Additionally, I will explain how Kitaev spin liquids could be realized with subextensively many conserved quantities by using boundary states of one-dimensional SPTs instead of local spins as building blocks.