RT Journal Article T1 Isostables for Stochastic Oscillators A1 PĂ©rez Cervera, Alberto A1 Lindner, Benjamin A1 Thomas, Peter J. AB Thomas and Lindner [P. J. Thomas and B. Lindner, Phys. Rev. Lett. 113, 254101 (2014).], defined an asymptotic phase for stochastic oscillators as the angle in the complex plane made by the eigenfunction, having a complex eigenvalue with a least negative real part, of the backward Kolmogorov (or stochastic Koopman) operator. We complete the phase-amplitude description of noisy oscillators by defining the stochastic isostable coordinate as the eigenfunction with the least negative nontrivial real eigenvalue. Our results suggest a framework for stochastic limit cycle dynamics that encompasses noise-induced oscillations. PB American Physical Society SN 0031-9007 YR 2021 FD 2021-12-14 LK https://hdl.handle.net/20.500.14352/5004 UL https://hdl.handle.net/20.500.14352/5004 LA eng DS Docta Complutense RD 7 abr 2025