Spectral properties of a partially spin-polarized one-dimensional Hubbard/Luttinger superfluid

Adrian E. Feiguin, David A. Huse

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

We calculate the excitation spectra of a spin-polarized Hubbard chain away from half filling using a high-precision momentum-resolved time-dependent density-matrix renormalization-group method. Focusing on the U<0 case, we present in some detail the single-fermion, pair, density, and spin spectra and discuss how spin-charge separation is altered for this system. The pair spectra show a quasicondensate at a nonzero momentum proportional to the polarization, as expected for this Fulde-Ferrell-Larkin-Ovchinnikov-type superfluid.

Original languageEnglish (US)
Article number100507
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume79
Issue number10
DOIs
StatePublished - Mar 3 2009

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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