Elementary Excitations in the Symmetric Spin--Orbital Model

TL;DR

This paper analyzes elementary excitations in a symmetric spin-orbital model on a square lattice, calculating spectra and correlation functions to understand the system's thermodynamics and phase behavior.

Contribution

It introduces a spherically symmetric self-consistent approach to analyze excitations and phase diagrams in the spin-orbital model, highlighting the role of entangled degrees of freedom.

Findings

Elementary excitations significantly influence thermodynamics.

Correlation functions vary with temperature and model parameters.

A schematic phase diagram is constructed.

Abstract

Possible types of elementary excitations in the symmetric spin-orbital model on the a square lattice are analyzed using a spherically symmetric self-consistent approach. The excitation spectra are calculated. The behavior of the corresponding correlation functions depending on the temperature and parameters of the model is studied. A schematic phase diagram is plotted. It is shown that the thermodynamics of the system is mainly determined by elementary excitations with the entangled spin and orbital degrees of freedom.