3 papers
cond-mat.soft2026
Hydrodynamics, Renormalization Group, and Universality Classes Far from Equilibrium
Patrick Jentsch, Chiu Fan Lee
Universality is one of the central organising principles of modern physics, explaining why systems with vastly different microscopic constituents can exhibit identical large-scale…
cond-mat.soft2025
Diversity of critical phenomena in the ordered phase of polar active fluids
Patrick Jentsch, Chiu Fan Lee
We present a comprehensive analytical linear stability analysis of the Toner-Tu model for polar active fluids in the ordered phase. Our results provide exact instability criteria a…
cond-mat.soft2023
Can exact scaling exponents be obtained using the renormalization group? Affirmative evidence from incompressible polar active fluids
Patrick Jentsch, Chiu Fan Lee
In active matter systems, non-Gaussian, exact scaling exponents have been claimed in a range of systems using perturbative renormalization group (RG) methods. This is unusual compa…