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- W3102181446 abstract "We investigate the effect of a strong magnetic field on a three dimensional smectic A liquid crystal. We identify a critical field above which the uniform layered state loses stability; this is associated to the onset of layer undulations. In a previous work, Garc'ia-Cervera and Joo considered the two dimensional case and analyzed the transition to the undulated state via a simple bifurcation. In dimension n=3 the situation is more delicate because the first eigenvalue of the corresponding linearized problem is not simple. We overcome the difficulties inherent to this higher dimensional setting by identifying the irreducible representations for natural actions on the functional that take into account the invariances of the problem thus allowing for reducing the bifurcation analysis to a subspace with symmetries. We are able to describe at least two bifurcation branches, one of which is stable, highlighting the richer landscape of energy critical states in the three dimensional setting. Finally, we analyze a reduced two dimensional problem, assuming the magnetic field is very strong, and are able to relate this to a model in micromagnetics studied, from where we deduce the periodicity property of minimizers." @default.
- W3102181446 created "2020-11-23" @default.
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- W3102181446 date "2016-07-06" @default.
- W3102181446 modified "2023-09-30" @default.
- W3102181446 title "The onset of layer undulations in smectic A liquid crystals due to a strong magnetic field" @default.
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- W3102181446 doi "https://doi.org/10.1088/0951-7715/29/8/2474" @default.
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