Dynamic response of one-dimensional interacting fermions

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dc.creatorPustilnik, M.
dc.creatorKhodas, M.
dc.creatorKamenev, A.
dc.creatorGlazman, L. I.
dc.date2006-03-17
dc.date2006-05-17
dc.date.accessioned2026-07-07T07:04:47Z
dc.date.available2026-07-07T07:04:47Z
dc.descriptionWe evaluate the dynamic structure factor $S(q,ω)$ of interacting one-dimensional spinless fermions with a nonlinear dispersion relation. The combined effect of the nonlinear dispersion and of the interactions leads to new universal features of $S(q,ω)$. The sharp peak $S\propto qδ(ω-uq)$, characteristic for the Tomonaga-Luttinger model, broadens up; $S(q,ω)$ for a fixed $q$ becomes finite at arbitrarily large $ω$. The main spectral weight, however, is confined to a narrow frequency interval of the width $δω\sim q^2/m$. At the boundaries of this interval the structure factor exhibits power-law singularities with exponents depending on the interaction strength and on the wave number $q$.
dc.identifierhttps://arxiv.org/abs/cond-mat/0603458
dc.identifierhttp://arxiv.org/abs/cond-mat/0603458
dc.identifierPhys. Rev. Lett. 96, 196405 (2006)
dc.identifierdoi:10.1103/PhysRevLett.96.196405
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/109447
dc.subjectMesoscale and Nanoscale Physics
dc.subjectStrongly Correlated Electrons
dc.titleDynamic response of one-dimensional interacting fermions
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