The Light-Front Coupled-Cluster Method Applied to ϕ1+14 Theory

S. S. Chabysheva

doi:10.1007/s00601-014-0930-3

The Light-Front Coupled-Cluster Method Applied to ϕ₁₊₁⁴ Theory

S. S. Chabysheva

Physics & Astronomy (Duluth)

Research output: Contribution to journal › Article › peer-review

Abstract

We use the light-front coupled-cluster (LFCC) method to compute the odd-parity massive eigenstate of ϕ₁₊₁⁴ 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.

Original language	English (US)
Pages (from-to)	401-406
Number of pages	6
Journal	Few-Body Systems
Volume	56
Issue number	6-9
DOIs	https://doi.org/10.1007/s00601-014-0930-3
State	Published - Oct 1 2015

Bibliographical note

Funding Information:
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.

Publisher Copyright:
© 2014, Springer-Verlag Wien.

Publisher link

10.1007/s00601-014-0930-3

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title = "The Light-Front Coupled-Cluster Method Applied to ϕ1+14 Theory",

abstract = "We use the light-front coupled-cluster (LFCC) method to compute the odd-parity massive eigenstate of ϕ1+14 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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AB - We use the light-front coupled-cluster (LFCC) method to compute the odd-parity massive eigenstate of ϕ1+14 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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