Non-Fermi-liquid behavior in a system with a nested Fermi surface

The nesting of the Fermi surfaces of an electron pocket and a hole pocket separated by a wave vector \mathbf{Q}interacting via a repulsive potential gives rise to itinerant antiferromagnetism. The order can gradually be suppressed by mismatching the nesting and a quantum critical point is obtained as {T}_{N}\ensuremath{\rightarrow}0.The renormalization group flow is studied by eliminating the fast degrees of freedom close to the...