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- Publication Year
- 2009-01-15
- Abstract
- Applying the functional Schroedinger picture to the Holstein-Primakoff boson theory, we obtain a dispersion energy relation for an antiferromagnetic spin polaron or magnon in two-dimensional systems of strongly correlated electrons. We show that our magnon ground-state wave function is equivalent to that of a retraceable path approximation by Reiter in the long-wavelength limit. Further, we demonstrate that the derived dispersion relation of a quasiparticle leads to the self-consistent Born approximation of the Green's function approach only in the large Heisenberg coupling J limit, showing that this new approach is general enough to contain more physical information than the Green's function approach in dealing with the antiferromagnetic spin polaron of interest.
- Keyword
- Functional Schroedinger picture theory; Holstein-Primakoff boson theory; Dispersion energy relation; Antiferromagnetic spin polaron; Two-dimensional systems of strongly correlated electrons
- Journal Title
- Journal of the Korean Physical Society
- Citation Volume
- 54
- ISSN
- 0374-4884
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- There are no files associated with this item.
- Appears in Collections:
- 7. KISTI 연구성과 > 학술지 발표논문
