A many-body exceptional point converts longitudinal noise into giant Goldstone-mode phase fluctuations that diverge for d <= 4 and creates a new strong-coupling universality class at d < 8.
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Critical fluctuations at a many-body exceptional point
A many-body exceptional point converts longitudinal noise into giant Goldstone-mode phase fluctuations that diverge for d <= 4 and creates a new strong-coupling universality class at d < 8.