@article{10902/26567, year = {2012}, url = {https://hdl.handle.net/10902/26567}, abstract = {We scrutinize the reliability of covariant and Gram-Schmidt Lyapunov vectors for capturing hydrodynamic Lyapunov modes (HLMs) in one-dimensional Hamiltonian lattices. We show that, in contrast with previous claims, HLMs do exist for any energy density, so that strong chaos is not essential for the appearance of genuine (covariant) HLMs. In contrast, Gram-Schmidt Lyapunov vectors lead to misleading results concerning the existence of HLMs in the case of weak chaos.}, organization = {M.R.B. thanks CONACyT, Mexico for financial support and Universidad de Cantabria for partial travel support. We acknowledge financial support fromMICINN (Spain) through Project No. FIS2009-12964-C05-05.}, publisher = {American Physical Society}, publisher = {Physical Review E - Statistical, Nonlinear, and Soft Matter Physics.85, 026210 (2012)}, title = {Covariant hydrodynamic Lyapunov modes and strong stochasticity threshold in Hamiltonian lattices}, author = {Pazó Bueno, Diego Santiago and Romero Bastida, Mauricio and López Martín, Juan Manuel}, }