Systems with Symmetry Breaking and Restoration

Symmetry

关键词: spontaneous symmetry breaking;    spontaneous symmetry restoration;    weighted Hilbert spaces;    ferroelectric-paraelectric phase transition;    relaxor ferroelectrics;   

DOI  :  10.3390/sym2010040

来源: mdpi

【 摘 要 】

Statistical systems, in which spontaneous symmetry breaking can be accompanied by spontaneous local symmetry restoration, are considered. A general approach to describing such systems is formulated, based on the notion of weighted Hilbert spaces and configuration averaging. The approach is illustrated by the example of a ferroelectric with mesoscopic fluctuations of paraelectric phase. The influence of the local symmetry restoration on the system characteristics, such as sound velocity and Debye-Waller factor, is discussed.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.