Weirdest Martensite: Smectic Liquid Crystal Microstructure and Weyl-Poincaré Invariance
نویسندگان
چکیده
منابع مشابه
Weirdest Martensite: Smectic Liquid Crystal Microstructure and Weyl-Poincaré Invariance.
Smectic liquid crystals are remarkable, beautiful examples of materials microstructure, with ordered patterns of geometrically perfect ellipses and hyperbolas. The solution of the complex problem of filling three-dimensional space with domains of focal conics under constraining boundary conditions yields a set of strict rules, which are similar to the compatibility conditions in a martensitic c...
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Many initially uniform systems can develop regular patterns of spatial structure when driven su ciently far from equilibrium. In their simplest forms, these patterns resemble soft condensed phases. Pattern formation takes place via instabilities that are the nonequilibrium equivalent of phase transitions. We rst provide a general overview of the study of pattern formation in uid dynamical syste...
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Any polar-ordered material with a spatially uniform polarization field is internally frustrated: The symmetry-required local preference for polarization is to be nonuniform, i.e., to be locally bouquet-like or "splayed." However, it is impossible to achieve splay of a preferred sign everywhere in space unless appropriate defects are introduced into the field. Typically, in materials like ferroe...
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I consider theories of Dirac fermions with different regularizations, leading to different chiral anomalies. I have investigated the Poincaré invariance properties of these theories. I find that both Lorentz and translational invariance are anomalously violated in general, but that they are respected in a theory that is regularized to give a Wess-Zumino consistent anomaly (the Bardeen anomaly)....
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2016
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.116.147802