Magnetic orders of Heisenberg models with arbitrary spin in semi-fermionic representation

In 1988 Popov and Fedotov (PF) proposed a new method for spin Hamiltonians free of the local constraint problem for spin S = 1/2 and S = 1. Later, this approach has been extended for arbitrary spin. PF formalism has been used to study magnetic orders in some spin S = 1/2 and S = 1 Heisenberg models....

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2020-03, Vol.1506 (1), p.12015
Main Authors: Thi Thanh Nga, Pham, Toan Thang, Nguyen
Format: Article
Language:English
Subjects:
Heisenberg theory
Low temperature
Mathematical analysis
Physics
Statistical models
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In 1988 Popov and Fedotov (PF) proposed a new method for spin Hamiltonians free of the local constraint problem for spin S = 1/2 and S = 1. Later, this approach has been extended for arbitrary spin. PF formalism has been used to study magnetic orders in some spin S = 1/2 and S = 1 Heisenberg models. In this report we show how to study the low temperature phases of quantum Heisenberg models with arbitrary spin by means of PF method. We work out the analytical expressions needed for studying ordered phases of Heisenberg models in one-loop approximation.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1506/1/012015