Topological stability of broken symmetry on fuzzy spheres
Abstract
We study the spontaneous symmetry breaking of O(3) scalar field on a fuzzy sphere SF2. We find that the fluctuations in the background of topological configurations are finite. This is in contrast to the fluctuations around a uniform configuration which diverge, due to Mermin-Wagner-Hohenberg-Coleman theorem, leading to the decay of the condensate. Interesting implications of enhanced topological stability of the configurations are pointed out.
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