Quantum-Corrected Holographic Wilson Loop Expectation Values and Super-Yang-Mills Confinement

TL;DR

This paper explores how quantum gravitational effects in holography can induce confinement in super-Yang-Mills theory by analyzing Wilson loop expectation values in an extremal AdS black brane background.

Contribution

It demonstrates that quantum fluctuations near the black brane horizon lead to an area-law Wilson loop, providing a holographic mechanism for confinement in super-Yang-Mills theory.

Findings

Quantum fluctuations modify Wilson loop values.

Wilson loops exhibit area-law behavior.

Confinement arises from near-horizon quantum gravity effects.

Abstract

Confinement is a well-known phenomenon in the infrared regime of (supersymmetric) Yang-Mills theory. While both experimental observations and numerical simulations have robustly confirmed its existence, the underlying physical mechanism remains elusive. Unraveling the theoretical origin of confinement continues to be a profound and longstanding challenge in both physics and mathematics. Motivated by recent advances in quantum Jackiw-Teitelboim gravity, we investigate the Wilson loop expectation values in the large-$N$ limit of $\mathscr{N}=4$ super-Yang-Mills theory at finite chemical potential, employing a holographic approach within the background of an extremal AdS$_5$ Reissner-Nordstr\"om black brane. Our results reveal that quantum gravitational fluctuations in the near-horizon region significantly modify the holographic Wilson loop expectation values. These values exhibit an area-law behavior, indicative of a confining quark-antiquark potential. Within this framework, our findings suggest that confinement in the super-Yang-Mills theory arises as a consequence of near-horizon quantum gravity fluctuations in the bulk extremal AdS$_5$ black brane geometry.