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Topological Classifications of Bosonic Excitations by Neeraj Kulkarni is a document available to read on EtoBox.
This document compares the topological classifications of quadratic bosonic excitations based on the Hamiltonian, dynamic matrix, and effective Hamiltonian. The Hermitian Hamiltonian leads to a three-fold way classification for bosons, while the non-Hermitian dynamic matrix and effective Hamiltonian lead to a ten-fold way classification similar to fermions. A 1D bosonic superconductor model is used to illustrate the differences between these classifications, while a 2D Chern insulator is insensitive to the
- Author
- Neeraj Kulkarni
- Language
- EN