Non-Fermi Liquid Behavior from Critical Fermi Surface Fluctuations
نویسندگان
چکیده
منابع مشابه
Transition from non Fermi Liquid Behavior to Landau Fermi Liquid Behavior Induced by Magnetic Fields
We show that a strongly correlated Fermi system with the fermion condensate, which exhibits strong deviations from Landau Fermi liquid behavior, is driven into the Landau Fermi liquid by applying a small magnetic field B at temperature T = 0. This field-induced Landau Fermi liquid behavior provides the constancy of the KadowakiWoods ratio. A re-entrance into the strongly correlated regime is ob...
متن کاملNon-Fermi-liquid behavior in quantum critical systems.
The problem of an electron gas interacting via exchanging transverse gauge bosons is studied using the renormalization group method. The long wavelength behavior of the gauge field is shown to be in the Gaussian universality class with a dynamical exponent z = 3 in dimensions D ≥ 2. This implies that the gauge coupling constant is exactly marginal. Scattering of the electrons by the gauge mode ...
متن کاملNon-Fermi Liquid in a Truncated Two-Dimensional Fermi Surface
Using perturbation theory and the field theoretical renormalization group approach we consider a two-dimensional anisotropic truncated Fermi Surface(FS) with both flat and curved sectors which approximately simulates the “cold” and “hot” spots in the cuprate superconductors. We calculate the one-particle two-loop irreducible functions Γ and Γ as well as the spin, the charge and pairing response...
متن کاملCrossover from Fermi Liquid to Non-Fermi Liquid Behavior in a Solvable One-Dimensional Model
We consider a quantum many-body problem in one-dimension described by a Jastrow type wavefunction, characterized by an exponent λ and a parameter γ. In the limit γ = 0 the model becomes identical to the well known 1/r2 pair-potential model; γ is shown to be related to the strength of a many body correction to the 1/r2 interaction. Exact results for the one-particle density matrix are obtained f...
متن کاملNon-Fermi-Liquid Behavior in Itinerant Antiferromagnets
016405-1 We consider a two-dimensional itinerant antiferromagnet near a quantum-critical point. We show that, contrary to conventional wisdom, fermionic excitations in the ordered state are not the usual Fermi-liquid quasiparticles. Instead, down to very low frequencies, the fermionic self-energy varies as !2=3. This non-Fermi-liquid behavior originates in the coupling of fermions to the longit...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Progress of Theoretical Physics Supplement
سال: 2008
ISSN: 0375-9687
DOI: 10.1143/ptps.176.22