2026/06/15 by Minwoo Bae, Hiroshi Kori · 1 voice
#nlin.AO #cond-mat.stat-mech
We study noisy identical Kuramoto-Sakaguchi oscillators with phase lag α∈[0,π/2), where α>0 induces nonreciprocal interactions. Numerical phase diagrams in the (σ, α) plane in fully-connected graphs, formed by long-range weights tuned by σ on d-dimensional lattices, reveal a critical phase lag αc, below which spontaneous synchronization occurs. This critical phase lag decreases monotonically with σ. We characterize the critical behavior analytically using the dynamical renormalization group theory.