Beyond The Quenched (or Probe Brane) Approximation in Lattice (or Holographic) QCD

TL;DR

This paper introduces a new method based on the worldline formalism to incorporate quark loop effects into lattice and holographic QCD calculations, improving upon the quenched approximation.

Contribution

It presents a novel approach to include quark loop effects in holographic QCD using the worldline formalism, enhancing the accuracy of such models.

Findings

Estimated screening (string breaking) effects holographically

Demonstrated the method's applicability to AdS/CFT calculations

Improved the quenched approximation in lattice and holographic QCD

Abstract

We propose a method to improve the quenched approximation. The method, based on the worldline formalism, takes into account effects of quark loops. The idea is useful mostly for AdS/CFT (holographic) calculations. To demonstrate the method we estimate screening (string breaking) effects by a simple holographic calculation.