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The Light-Front Coupled-Cluster Method Applied to \({\phi_{1+1}^4}\) Theory

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Abstract

We use the light-front coupled-cluster (LFCC) method to compute the odd-parity massive eigenstate of \({\phi_{1+1}^4}\) theory. A standard Fock-space truncation of the eigenstate yields 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; the eigenvalue problem is reduced to a finite set of nonlinear equations without any restriction on Fock space, but with restrictions on the Fock wave functions. We compare our results with those obtained with a Fock-space truncation.

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Authors and Affiliations

  1. Department of Physics, University of Minnesota-Duluth, Duluth, MN, 55812, USA

    S. S. Chabysheva

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  1. S. S. Chabysheva
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Correspondence to S. S. Chabysheva.

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Work done in collaboration with B. Elliott and J. R. Hiller and supported in part by the US Department of Energy and the Minnesota Supercomputing Institute.

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Chabysheva, S.S. The Light-Front Coupled-Cluster Method Applied to \({\phi_{1+1}^4}\) Theory. Few-Body Syst 56, 401–406 (2015). https://doi.org/10.1007/s00601-014-0930-3

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  • DOI: https://doi.org/10.1007/s00601-014-0930-3

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