1202.2494 (Yushu Song et al.)

Fermi Surface under Magnetism Instability    [PDF]

Yushu Song, Shu-Qing Guo

In this paper, we study the fermionic excitations near the quantum
criticality using gauge/gravity duality. This is motivated by exploring the
non-Fermi liquid behavior under quantum phase transition. Following the
procedure of Liu, McGreevy and Vegh, we construct the gravity dual of
"paramagnetic-ferromagnetic" transition in a continuum limit and study the
non-Fermi liquid behavior under the phase transition. We find that there exists
non-Fermi liquid with the Fermi surface in the "paramagnetic" phase and the
Fermi surface disappears in the "ferromagnetic" phase.

View original: http://arxiv.org/abs/1202.2494