Abstract
The tangent dynamics of the Lyapunov modes and their dynamics as generated numerically—the numerical dynamics—is considered. We present a new phenomenological description of the numerical dynamical structure that accurately reproduces the experimental data for the quasi-one-dimensional hard-disk system, and shows that the Lyapunov mode numerical dynamics is linear and separate from the rest of the tangent space. Moreover, we propose a new, detailed structure for the Lyapunov mode tangent dynamics, which implies that the Lyapunov modes have well-defined (in)stability in either direction of time. We test this tangent dynamics and its derivative properties numerically with partial success. The phenomenological description involves a time-modal linear combination of all other Lyapunov modes on the same polarization branch and our proposed Lyapunov mode tangent dynamics is based upon the form of the tangent dynamics for the zero modes.
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Robinson, D.J., Morriss, G.P. Lyapunov Mode Dynamics in Hard-Disk Systems. J Stat Phys 131, 1–31 (2008). https://doi.org/10.1007/s10955-007-9473-z
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DOI: https://doi.org/10.1007/s10955-007-9473-z