Chiral 2D "Strange Metals" from N = 4 SYM

Abstract

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 $k_F\to \infty$, are governed by a chiral 1+1 dimensional sector of the "strange metal" coset $SU(N{)}_N\otimes SU(N{)}_N/SU(N{)}_{2N}$. 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 $(S=0,\Omega =1,J\to \infty )$ degenerations of black holes will be governed by a chiral sector of a 1+1 CFT.

arXiv comment44 pages

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• Higher Spin Currents in the N=2 Stringy Coset Minimal Model
• Probing the EVH limit of supersymmetric AdS black holes
• The Panorama of Spin Matrix Theory
• Spin Matrix Theory in near $\frac{1}{8}$-BPS corners of $\mathcal{N}=4$ super-Yang-Mills
• Chiral Ring of Strange Metals: The Multicolor Limit