A Lieb-Schultz-Mattis Type Theorem Without Continuous Symmetry by Hal Tasaki
International Centre for Theoretical Sciences via YouTube
Overview
Syllabus
A Lieb-Schultz-Mattis type theorem without continuous symmetry
Lieb-Schultz-Mattis type theorem in quantum spin chains without continuous symmetry a "no non-degenerate scar theorem"
Lieb-Schultz-Mattis LSM type theorem
Proof of the original theorem
A Typical Theorem
Remarks on the Theorem 1
Remarks on the Theorem 2
Remarks on the Theorem 3
Remarks on the Theorem 4
The group Z2 * Z2 its representation and projective representation
Z2 X Z2 transformation of a single spin
Theorem for Matrix Product States MPS
Matrix Product States MPS
Theorem for MPS
Proof of Theorem 1'
Toward the Full Theorem
From Theorem 1' to Theorem 1
About operator algebraic approaches in quantum systems with infinite degrees of freedom
Opinions of a mathematical physicist on operator algebraic approaches to spin systems student
Outline of the Proof
Algebras for the half-infinite chain
New Hilbert space H
The Cuntz algebra
The core of the proof
Extensions
Symmetry
State
General Theorem
Summary
Q&A
Taught by
International Centre for Theoretical Sciences