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Schwinger-Keldysh effective action for relativistic Brownian particle in AdS-CFT
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We compute Schwinger-Keldysh effective action for a relativistic heavy quark (with constant background velocity) in strongly coupled N = 4 supersymmetric Yang-Mills plasma. The holographic dual description involves a noisy trailing string moving in Schwarzschild-AdS5 black brane. The noise is caused by Hawking radiation emitted from string worldsheet horizon. Besides quadractic terms, the effective action contains cubic interactions, which are entirely induced by the constant background velocity. The nonlinear fluctuation-dissipation relations for three-point functions are discussed based on holographic results.
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Cited by 2 Pith papers
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Chiral Anomalous Magnetohydrodynamics in action: effective field theory and holography
The holographic Schwinger-Keldysh effective action for chiral anomalous magnetohydrodynamics matches the Landry-Liu EFT and generalizes it to finite background axial gauge field.
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Chiral phase transition: effective field theory and holography
A Schwinger-Keldysh effective field theory for the chiral phase transition, with chiral charges and condensate as dynamical variables, is constructed and its coefficients are computed in a modified AdS/QCD model, with...
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