A nonperturbative light-front coupled-cluster method

J. R. Hiller

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The nonperturbative Hamiltonian eigenvalue problem for bound states of a quantum field theory is formulated in terms of Dirac's light-front coordinates and then approximated by the exponential-operator technique of the many-body coupled-cluster method. This approximation eliminates any need for the usual approximation of Fock-space truncation. Instead, the exponentiated operator is truncated, and the terms retained are determined by a set of nonlinear integral equations. These equations are solved simultaneously with an effective eigenvalue problem in the valence sector, where the number of constituents is small. Matrix elements can be calculated, with extensions of techniques from standard coupled-cluster theory, to obtain form factors and other observables.

Original languageEnglish (US)
Title of host publicationQCD at WORK 2012 - International Workshop on Quantum Chromodynamics
Subtitle of host publicationTheory and Experiment
Number of pages5
StatePublished - 2012
EventInternational Workshop on Quantum Chromodynamics: Theory and Experiment, QCD at WORK 2012 - Lecce, Italy
Duration: Jun 18 2012Jun 21 2012

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


OtherInternational Workshop on Quantum Chromodynamics: Theory and Experiment, QCD at WORK 2012


  • Greenberg-Schwebermodel
  • Hamiltonian method
  • light-front quantization


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