Title variants
Languages of publication
Abstracts
The spin-rotationally invariant SU(2) approach to the Hubbard model is extended to accommodate the charge degrees of freedom. Both U(1) and SU(2) gauge transformation are used to factorize the charge and spin contribution to the original electron operator in terms of the emergent gauge fields. It is shown that these fields play a similar role as phonons in the BCS theory: they provide the "glue" for fermion pairing. By tracing out gauge bosons the form of paired states is established and the role of antiferromagnetic correlations is explicated.
Discipline
Journal
Year
Volume
Issue
Pages
273-278
Physical description
Dates
published
2010-08
Contributors
author
- Institute for Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
author
- Institute for Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland
References
- 1. T.A. Maier, M.S. Jarrell, D.J. Scalapino, Phys. Rev. Lett. 96, 047005 (2006)
- 2. T.A. Maier, M. Jarrell, D.J. Scalapino, Phys. Rev. B 74, 094513 (2006)
- 3. P. Monthoux, D.J. Scalapino, Phys. Rev. Lett. 72, 1874 (1994)
- 4. A. Moreo, D.J. Scalapino, Phys. Rev. B 43, 8211 (1991)
- 5. J. Zaanen, G.A. Sawatzky, J.W. Allen, Phys. Rev. Lett. 55, 418 (1985)
- 6. R.B. Laughlin, cond-mat/0209269 (unpublished)
- 7. T.K. Kopeć, Phys. Rev. B 73, 132512 (2006)
- 8. T.A. Zaleski, T.K. Kopeć, Phys. Rev. B 77, 125120 (2008)
- 9. See for instance J.W. Negele, H. Orland, Quantum Many Particle Systems, Frontiers in Physics, Addison-Wesley, Reading (MA) 1988
- 10. H.J. Schulz, Phys. Rev. Lett. 65, 2462 (1990)
- 11. A. Auerbach, Interacting Electrons and Quantum Magnetism, Springer-Verlag, New York 1994
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv118n211kz