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We present an intermediate coupling scenario together with a model analyticsolution where the non-Fermi-liquid behavior in the underdoped cuprates emergesthrough the mechanism of Fermi surface (FS) reconstruction. Even though thefluctuation spectrum remains nearly isotropic, FS reconstruction driven by adensity wave order breaks the lattice symmetry and induces a strong momentumdependence in the self-energy. As the doping is reduced to half-filling, wefind that quasiparticle (QP) dispersion becomes essentially unrenormalized, butin sharp contrast the QP spectral weight renormalizes to nearly zero. Thisopposite doping evolution of the renormalization factors for QP dispersion andspectral weight conspires in such a way that the specific heat remains Fermiliquid like at all dopings in accord with experiments.

Emergence of non-Fermi-liquid behavior due to Fermi surface reconstruction in the underdoped cuprate superconductors