Exactly solvable one-dimensional quantum models with gamma matrices.

Chugh, Yash; Dhochak, Kusum; Divakaran, Uma; Narayan, Prithvi; Pal, Amit Kumar · Phys Rev E · 2022

basic_science · Level V

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Abstract

In this paper we write exactly solvable generalizations of one-dimensional quantum XY and Ising-like models by using 2^{d}-dimensional gamma matrices as the degrees of freedom on each site. We show that these models result in quadratic Fermionic Hamiltonians with Jordan-Wigner-like transformations. We illustrate the techniques using a specific case of four-dimensional gamma matrices and explore the quantum phase transitions present in the model.