The Heisenberg ferromagnet in spin coherent state representation

Sriram Shastry, B. ; Agarwal, G. S. ; Rama Rao, I. (1978) The Heisenberg ferromagnet in spin coherent state representation Pramana - Journal of Physics, 11 (1). pp. 85-99. ISSN 0304-4289

PDF - Publisher Version

Official URL:

Related URL:


A new approach to Heisenberg ferromagnet using the spin coherent state representation is developed. The differential operator representation of spin angular momentum operators is used to derive the c-number analogs of the basic quantum mechanical equations, viz., the Schrödinger, Bloch and Liouville equations for the Heisenberg ferromagnet. As an important illustration of our formulation, which has no ad hoc assumptions and does not use any boson representation, the excitation spectrum for one, two and three spin waves is obtained. In these cases it is also shown that eigenvalue spectrum can be obtained by completely ignoring the kinematical interactions.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Heisenberg Ferromagnet; Spin Coherent States
ID Code:51264
Deposited On:28 Jul 2011 07:17
Last Modified:18 May 2016 05:17

Repository Staff Only: item control page