Hamiltonian dynamics of dense chains and lattices: Or how to correct the continuum

Research output: Contribution to journalArticlepeer-review

Abstract

We discuss the problems involved in deriving correct quasi-continuum approximations of Hamiltonians describing the motion of dense lattices directly from the underlying discrete Hamiltonian. This assures that the resulting equations of motion have a Hamiltonian structure and are free from ultra-violet instabilities.

Original languageEnglish
Pages (from-to)39-52
Number of pages14
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume311
Issue number1
DOIs
StatePublished - 5 May 2003

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