Conformal structure in the spectrum of an altered quantum Ising chain

M. Henkel, A. Patkos

Research output: Contribution to journalArticle

36 Citations (Scopus)


The Ising model with an infinite line of defects is mapped onto a strip with two defect lines. The Hamiltonian spectrum is studied at the bulk critical point. Its exact diagonal form is found for an infinite number of sites. The spectrum of physical excitations contains an infinite number of primary fields, while the leading ground-state energy correction is independent of the defect strength. A novel algebraic structure interpolating between those belonging to periodic and free boundary conditions is signalled.

Original languageEnglish
Article number032
Pages (from-to)2199-2210
Number of pages12
JournalJournal of Physics A: General Physics
Issue number8
Publication statusPublished - Dec 1 1987

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Physics and Astronomy(all)
  • Mathematical Physics

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