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arXiv · 2606.17919

Holographic Schwinger-Keldysh effective action for heavy quarks in confinement and deconfinement phases

Shin Nakamura·Daichi Takeda
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Abstract

The holographic Schwinger-Keldysh (SK) prescription proposed by Skenderis and van Rees (SvR) has the advantage of being applicable whether or not the gravity dual contains a black hole. Taking advantage of this feature, we derive the quadratic effective action for a quark-antiquark pair in the confinement phase within the holographic SK framework of SvR. We also apply the SvR prescription to derive the quadratic effective action for a single heavy quark moving at a constant velocity in a nonequilibrium steady state in the deconfinement phase.

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Shin Nakamura, Daichi Takeda. 2026-06-16. Holographic Schwinger-Keldysh effective action for heavy quarks in confinement and deconfinement phases. https://arxiv.org/abs/2606.17919

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