TY - JOUR

T1 - The large-N limit of the 4d N = 1 superconformal index

AU - Cabo-Bizet, Alejandro

AU - Cassani, Davide

AU - Martelli, Dario

AU - Murthy, Sameer

PY - 2020/11

Y1 - 2020/11

N2 - We systematically analyze the large-N limit of the superconformal index of N = 1 superconformal theories having a quiver description. The index of these theories is known in terms of unitary matrix integrals, which we calculate using the recently-developed technique of elliptic extension. This technique allows us to easily evaluate the integral as a sum over saddle points of an effective action in the limit where the rank of the gauge group is infinite. For a generic quiver theory under consideration, we find a special family of saddles whose effective action takes a universal form controlled by the anomaly coefficients of the theory. This family includes the known supersymmetric black hole solution in the holographically dual AdS5 theories. We then analyze the index refined by turning on flavor chemical potentials. We show that, for a certain range of chemical potentials, the effective action again takes a universal cubic form that is controlled by the anomaly coefficients of the theory. Finally, we present a large class of solutions to the saddle-point equations which are labelled by group homomorphisms of finite abelian groups of order N into the torus.

AB - We systematically analyze the large-N limit of the superconformal index of N = 1 superconformal theories having a quiver description. The index of these theories is known in terms of unitary matrix integrals, which we calculate using the recently-developed technique of elliptic extension. This technique allows us to easily evaluate the integral as a sum over saddle points of an effective action in the limit where the rank of the gauge group is infinite. For a generic quiver theory under consideration, we find a special family of saddles whose effective action takes a universal form controlled by the anomaly coefficients of the theory. This family includes the known supersymmetric black hole solution in the holographically dual AdS5 theories. We then analyze the index refined by turning on flavor chemical potentials. We show that, for a certain range of chemical potentials, the effective action again takes a universal cubic form that is controlled by the anomaly coefficients of the theory. Finally, we present a large class of solutions to the saddle-point equations which are labelled by group homomorphisms of finite abelian groups of order N into the torus.

KW - AdS-CFT Correspondence

KW - Black Holes in String Theory

KW - Conformal Field Theory

KW - Supersymmetric Gauge Theory

UR - http://www.scopus.com/inward/record.url?scp=85096840794&partnerID=8YFLogxK

U2 - 10.1007/JHEP11(2020)150

DO - 10.1007/JHEP11(2020)150

M3 - Article

AN - SCOPUS:85096840794

SN - 1126-6708

VL - 2020

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 11

M1 - 150

ER -