52 citations · 52 across the 1 of their papers we have counts for
2 papers
physics.class-ph2007★ 52 cited
On the geometry of Hamiltonian chaos
Lawrence Horwitz, Jacob Levitan, Meir Lewkowicz +2
We show that Gutzwiller's characterization of chaotic Hamiltonian systems in terms of the curvature associated with a Riemannian metric tensor in the structure of the Hamiltonian c…
physics.med-ph1999
Scale Specific and Scale Independent Measures of Heart Rate Variability as Risk Indicators
Y. Ashkenazy, M. Lewkowicz, J. Levitan +7
We study the Heart Rate Variability (HRV) using scale specific variance and scaling exponents as measures of healthy and cardiac impaired individuals. Our results show that the var…