TY - JOUR A1 - Prosen, Tomaz T1 - Complexity and nonseparability of classical Liouvillian dynamics T2 - Physical review : E, Statistical, nonlinear and soft matter physics N2 - We propose a simple complexity indicator of classical Liouvillian dynamics, namely the separability entropy, which determines the logarithm of an effective number of terms in a Schmidt decomposition of phase space density with respect to an arbitrary fixed product basis. We show that linear growth of separability entropy provides a stricter criterion of complexity than Kolmogorov-Sinai entropy, namely it requires that the dynamics be exponentially unstable, nonlinear, and non-Markovian. Y1 - 2011 UR - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/36956 SN - 1539-3755 VL - 83 IS - 3 PB - American Physical Society CY - College Park ER -