Phys. Rev. E 61, 4622–4625 (2000)Stationary and drifting localized structures near a multiple bifurcation pointReceived 19 July 1999; published in the issue dated April 2000 Localized states embedded in a patterned background are found in numerical simulations of spontaneous pattern formation in a spin-1/2 atomic system with optical feedback. In the vicinity of a parameter region with bistability between two homogeneous states large amplitude peaks as well as dark holes exist as stable localized states on a hexagonal background. Moreover, resonant interaction between oscillatory and stationary inhomogeneous modes produces a nonstationary background which may force the localized states to drift. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevE.61.4622
DOI:
10.1103/PhysRevE.61.4622
PACS:
47.54.+r, 42.65.Sf, 82.40.Bj
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