Challenges for web mining

Non-Fermi liquids from holography

“…It is, however, not of the form corresponding to a Landau Fermi liquid which would have exponents z = α = 1. It is an example of the more general scaling behavior discussed recently by Senthil [23,24] for a critical Fermi surface occurring at a continuous metal-insulator transition 9 . The system also has a rather curious particlehole asymmetry; the quasi-particle-like peak at k ⊥ < 0 morphs into a "bump" at k ⊥ > 0 as the Fermi surface is crossed (compare feature 1 and 2 of previous page).…”

“…2 (see the right panel of figure 4). This behavior can be understood from ( 26) and (24) as follows. For k ≥ µq √ 6 (at m = 0), the boundary conditions (26) become real and since (24) are real equations, Im G ii (ω = 0, k) are then identically zero in this region.…”

“…We now describe the properties of G R obtained by solving (24). First note that by taking k → −k the equations for ξ ± exchange with each other, leading to…”

“…Further study of G R is possible by numerically solving (24). We will first consider T = 0 and will mostly discuss the massless case.…”

“…With the boundary condition (25), one can now integrate (24) to r → ∞ to obtain the boundary correlation function directly. Below we will drop the subscript 1 on k 1 .…”