6533b7d1fe1ef96bd125c3a1

RESEARCH PRODUCT

Spectral Function of the One-Dimensional Hubbard Model away from Half Filling

H. BenthienEric JeckelmannFlorian Gebhard

subject

PhysicsDensity matrixStrongly Correlated Electrons (cond-mat.str-el)Hubbard modelFOS: Physical sciencesGeneral Physics and AstronomyRenormalization groupThermal conductionSpinonBethe ansatzConductorCondensed Matter - Strongly Correlated ElectronsLuttinger liquidQuantum electrodynamicsQuantum mechanicsCondensed Matter::Strongly Correlated Electrons

description

We calculate the photoemission spectral function of the one-dimensional Hubbard model away from half filling using the dynamical density matrix renormalization group method. An approach for calculating momentum-dependent quantities in finite open chains is presented. Comparison with exact Bethe Ansatz results demonstrates the unprecedented accuracy of our method. Our results show that the photoemission spectrum of the quasi-one-dimensional conductor TTF-TCNQ provides evidence for spin-charge separation on the scale of the conduction band width.

yearjournalcountryeditionlanguage
2004-02-26Physical Review Letters
https://doi.org/10.1103/physrevlett.92.256401