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cond-mat.stat-mech2026
Fluctuation--Response Relation in Finite-Size Noisy Coupled Phase Oscillators
Mrinal Sarkar, Yoshiyuki Y. Yamaguchi
Fluctuation--response relations (FRRs) provide a fundamental relation between spontaneous fluctuations and the linear response to external perturbations, yet their validity in non-…
cond-mat.stat-mech2026
Universality of superdiffusion in simple random graphs
Mrinal Sarkar, Nicolò Defenu, Tilman Enss
Random walks with long-range jumps can drive superdiffusive transport, replacing ordinary diffusion with an effective long-range kinetic operator. Such superdiffusive kinetics is a…
cond-mat.dis-nn2026
Emergent quantum chaos from correlations on a random graph
Mrinal Sarkar, Valerio Pagni, Tilman Enss +1
This work demonstrates that sparse long-range random bonds on a one-dimensional lattice alone can generate quantum-chaotic spectral correlations and also drive a localization trans…