https://doi.org/10.1140/epjc/s10052-025-14753-2
Regular Article - Theoretical Physics
Holographic Schwinger effect in strongly coupled 
= 4 super Yang–Mills plasma on the Coulomb branch
School of Physics and Telecommunications Engineering, Zhoukou Normal University, 466001, Zhoukou, China
a
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Received:
18
June
2025
Accepted:
8
September
2025
Published online:
17
September
2025
Abstract
In this study, we investigate the holographic Schwinger effect within the framework of 
super Yang–Mills theory on the Coulomb branch (cSYM). The Coulomb branch is characterized by spontaneous conformal symmetry breaking via the Higgs mechanism, which dynamically generates a characteristic energy scale 
. We conduct a detailed analysis to examine how the dimensionless ratio of temperature to energy scale (
) influences the quark–antiquark separation length, the potential barrier, and the critical electric field. Our findings indicate that the maximum quark–antiquark separation length exhibits a monotonic suppression as increases, suggesting that promotes the dissociation of quark-pair. Additionally, we observe that reduces both the height and width of the potential barrier. The critical electric field displays suppression with increasing . These results demonstrate that in strongly coupled cSYM, increasing enhances the Schwinger effect.
© The Author(s) 2025
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Funded by SCOAP3.
