Schwinger Effect in a Twice Anisotropic Holographic Model

TL;DR

This paper studies how spatial and magnetic anisotropies in a holographic QCD model influence the Schwinger effect, showing magnetic fields enhance particle pair production while spatial anisotropy suppresses it, with implications for heavy-ion collisions.

Contribution

It introduces a dual-anisotropic holographic model to analyze the Schwinger effect, revealing the contrasting roles of magnetic and spatial anisotropies on particle production.

Findings

Magnetic field enhances the Schwinger effect by lowering the potential barrier.

Spatial anisotropy suppresses the Schwinger effect by raising the potential barrier.

Both anisotropies must be considered for realistic heavy-ion collision modeling.

Abstract

In this work, we investigate the Schwinger effect in a twice anisotropic holographic QCD model that incorporates both spatial and magnetic anisotropies. Using the AdS/CFT correspondence, we calculate the total potential of a particle-antiparticle pair to evaluate how these anisotropies affect the holographic Schwinger effect. Our calculations reveal that the magnetic field, characterized by parameters $c_B$ and $q_3$, consistently enhances the Schwinger effect by lowering and narrowing the potential barrier. In contrast, increasing the spatial anisotropy, parameterized by $\nu$, raises and widens the barrier, thereby suppressing the process. These findings suggest the significance of treating both anisotropies concurrently for a realistic description of particle production in HIC.