Generalized Kramers-Wannier Duality from Bilinear Phase Map
Abstract
We present the bilinear phase map, a concept that generalizes the Kramers-Wannier transformation to investigate unconventional gapped phases of qudit spin chains. Encoding the transformation in a matrix, the bilinear phase map enables the exploration of a broader spectrum of generalized quantum phases and dualities, including the nonunitarity in duality transformations, and derivation of general noninvertible fusion rules. Furthermore, we obtain strong constraints on anomaly conditions of qudit models with a general class of duality symmetries. This establishes a microscopic anomaly classification for a broad class of lattice dualities.
Fields of Study & Subjects
Advanced Mathematical Identities
Mathematical functions and polynomials
Analytic and geometric function theory
Publication details
- Journal / source
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Volume
- 136
- Issue
- 24
- Pages
- 240403–240403
- Publication date
- 12 May 2026
- Language
- EN