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hep-th2026
Late-Time Relaxation from Landau Singularities
Dong-Lin Wang, Shi Pu
Nonlinear hydrodynamic interactions can change the relaxation of fluctuations from exponential to power-law decay at late times. Schwinger-Keldysh effective field theory provides a…
hep-th2023★ 2 cited
Stability and causality criteria in linear mode analysis: stability means causality
Dong-Lin Wang, Shi Pu
Causality and stability are fundamental requirements for the differential equations describing predictable relativistic many-body systems. In this work, we investigate the stabilit…