Dear All,

Prof. Nandini Trivedi, who is a Satish Dhawan Chair Professor at the Physics Department, IISc, will offer a short course on quantum magnetism. Please see below for details. First Class: February 14, 2024, 11:00 am -12:00 pm. Venue: LH-04, Physics Annex Building

From ordered magnets to quantum spin liquids: From spontaneously broken symmetry to topological order Nandini Trivedi

How does the bosonic wave function change to include topological defects, entanglement, and go toward describing a system with topological order

L1: Heisenberg model mapping to hard core bosons Condensate fraction Symmetry Breaking L2: Variational wave functions, Marshall sign and violations L3: Topological defects L4: Discussion of numerical results; Student Presentations L5: Quantum Entanglement L6: Discussion of numerical results; Student Presentations

Techniques: Exact diagonalization, Variational Monte Carlo Models: Quantum Ising model, Heisenberg type models, Kitaev type models Lattices: 1d, 2d (square, triangle, honeycomb, kagome)

Best,

Sumilan

Associate Professor Department of Physics Indian Institute of Science Bangalore 560012, India Phone: +9108022932557