Sfb 288 Differential Geometry and Quantum Physics

Abstract for Sfb Preprint No. 31

Phases of the Number-Theoretical Spin Chain

A. Knauf

We present numerical and analytical evidence for a first-order phase transition of the ferromagnetic spin chain with partition function Z(beta) = zeta(beta-1)/zeta(beta) at the inverse temperature beta_cr = 2.

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