Chiral 2D "strange metals" from N = 4 $$ \mathcal{N}=4 $$ SYM

Micha Berkooz, Prithvi Narayan, Amir Zait
2015 Journal of High Energy Physics  
Familiar field theories may contain closed subsectors made out of only fermions, which can be used to explore new and unusual phases of matter in lower dimensions. We focus on the fermionic su(1,1) sector in N=4 SYM and on its ground states, which are Fermi surface states/operators. By computing their spectrum to order (g_YM^2 N)^2, we argue that fluctuations around this fermi surface, within the sector and in the limit k_F→∞, are governed by a chiral 1+1 dimensional sector of the "strange
more » ... " coset SU(N)_N ⊗ SU(N)_N/SU(N)_2N. On the gravity side, the conjectured dual configuration is an S=0 degeneration of a rotating black hole. On general grounds we expect that the near horizon excitations of (S=0,Ω=1,J→∞) degenerations of black holes will be governed by a chiral sector of a 1+1 CFT.
doi:10.1007/jhep01(2015)003 fatcat:iuvlqymebbgkhi6pxndysg6yuu