Spin and charge fluctuations in the Hubbard model

A. Sherman

doi:10.1016/j.jmmm.2016.12.045

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arXiv · 1606.04396

Spin and charge fluctuations in the Hubbard model

A. Sherman

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Abstract

Using the strong coupling diagram technique for calculating the electron Green's function of the two-dimensional Hubbard model we have summed infinite sequences of ladder diagrams, which describe interactions of electrons with spin and charge fluctuations. For sufficiently low temperatures and doping a pronounced four-band structure is observed in spectral functions. Its appearance is related to the proximity of the transition to the long-range antiferromagnetic order.

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A. Sherman. 2016-06-14. Spin and charge fluctuations in the Hubbard model. https://doi.org/10.1016/j.jmmm.2016.12.045

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