Spin and charge fluctuations in the Hubbard model

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.

4 pages, 4 figures, EASTMAG-2016

References in corpus (7)

• Variational cluster approach to spontaneous symmetry breaking: The itinerant antiferromagnet in two dimensions
• Fluctuating charge density waves in the Hubbard model
• Quasiparticle states of the Hubbard model near the Fermi level
• Magnetic susceptibility of the two-dimensional Hubbard model using a power series for the hopping constant
• The Mott transition in the strong coupling perturbation theory
• Properties of the half-filled Hubbard model investigated by the strong coupling diagram technique
• The Hubbard model in the strong coupling theory at arbitrary filling

Cited by in corpus (3)

• Continuum of many-particle states near the metal-insulator transition in the Hubbard model
• Steady and dynamic magnetic phase transitions in interacting quantum dots arrays coupled with leads
• Effective interaction in a non-Fermi liquid conductor and spin correlations in under-doped cuprates