Abstract
The exact solution of the problem of 2 electrons in the Hubbard model is shown to be characterized by strong correlations both in one and two spatial dimensions even for arbitrary values of the coupling constant U both in one and in two dimensions. This result supports the conjecture that the low density regime of the Hubbard model is described by the strong coupling limit for every U > 0.
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© 1991 Plenum Press, New York
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Parola, A., Sorella, S., Parrinello, M., Tosatti, E. (1991). Strong Coupling Regime in the Hubbard Model at Low Densities. In: Reiter, G., Horsch, P., Psaltakis, G.C. (eds) Dynamics of Magnetic Fluctuations in High-Temperature Superconductors. NATO ASI Series, vol 246. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-7490-9_25
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DOI: https://doi.org/10.1007/978-1-4684-7490-9_25
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4684-7492-3
Online ISBN: 978-1-4684-7490-9
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