title: Self-parametric instability in spatially extended systems.
abstract: We study the stability of almost homoclinic homogeneous limit cycles with respect to spatiotemporal perturbations. It is shown that they are generically unstable. The instability is either the phase instability or a finite wavelength period doubling instability.
authors.affiliation: INLN, 1361 Route des Lucioles, 06560 Valbonne, France.
authors.forename: M
authors.initials: M
authors.lastname: Argentina
authors.forename: P
authors.initials: P
authors.lastname: Coullet
authors.forename: E
authors.initials: E
authors.lastname: Risler