Expansions for one quasiparticle states in spin 1/2 systems

Nilanjana Datta, Tom Kennedy

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Convergent expansions of the wavefunctions for the ground state and low-lying excited states of quantum transverse Ising systems are obtained. These expansions are employed to prove that the dispersion relation for a single quasi-particle has a convergent expansion.

Original languageEnglish (US)
Pages (from-to)373-399
Number of pages27
JournalJournal of Statistical Physics
Issue number3-4
StatePublished - 2002


  • Expansions
  • Quantum spins
  • Quasiparticles
  • Transverse Ising model

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics


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