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Physical Review Letters

Quasiperiodic Ising Model in a Transverse Field: Analytical Results

Hermenegildo Alejandro Ceccatto

Published Jan 9, 1989• 32 citations
Publisher

Abstract

The quantum Ising model in a transverse field with couplings following the Fibonacci sequence is considered. Exact analytical results for the critical line, energy gap, and ground-state singularity are presented. The main features of the multifractal structure of the Cantor-set energy spectrum are discussed.
DOI
10.1103/physrevlett.62.203

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