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nucl-th2026
Hydrodynamics without a relaxation gap: memory effects, nonlocality, and superdiffusion
Lorenzo Gavassino, Sukanya Mitra, Rajeev Singh
By studying a simple model of relativistic particles propagating through a background medium with an energy-dependent relaxation time that is unbounded from above, we investigate h…
hep-th2026
Necessary conditions for causality from linearized stability at ultra-high boosts
Shuvayu Roy, Sukanya Mitra, Rajeev Singh
In this work, we provide a novel method to constrain the causal parameter space of a relativistic hydrodynamic system exclusively from its linear stability analysis at non-zero mom…