Application of the light-front coupled-cluster method to ϕ4 theory in two dimensions

Blair Elliott, Sophia S. Chabysheva, and John R. Hiller
Phys. Rev. D 90, 056003 – Published 11 September 2014

Abstract

As a first numerical application of the light-front coupled-cluster (LFCC) method, we consider the odd-parity massive eigenstate of ϕ1+14 theory. The eigenstate is built as a Fock-state expansion in light-front quantization, where wave functions appear as coefficients of the Fock states. A standard Fock-space truncation would then yield a finite set of linear equations for a finite number of wave functions. The LFCC method replaces Fock-space truncation with a more sophisticated truncation, one which reduces the eigenvalue problem to a finite set of nonlinear equations without any restriction on Fock space. We compare our results with those obtained with a Fock-space truncation that yields the same number of equations.

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  • Received 29 July 2014

DOI:https://doi.org/10.1103/PhysRevD.90.056003

© 2014 American Physical Society

Authors & Affiliations

Blair Elliott, Sophia S. Chabysheva, and John R. Hiller*

  • Department of Physics, University of Minnesota-Duluth, Duluth, Minnesota 55812, USA

  • *Corresponding author. jhiller@d.umn.edu

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Issue

Vol. 90, Iss. 5 — 1 September 2014

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