Application of a Light-Front Coupled Cluster Method

Sophia S Chabysheva; John R Hiller

doi:10.1007/s00601-011-0269-y

Application of a Light-Front Coupled Cluster Method

Sophia S Chabysheva, John R Hiller

Physics & Astronomy (Duluth)

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Abstract

As a test of the new light-front coupled-cluster method in a gauge theory, we apply it to the nonperturbative construction of the dressed-electron state in QED, for an arbitrary covariant gauge, and compute the electron's anomalous magnetic moment. The construction illustrates the spectator and Fock-sector independence of vertex and self-energy contributions and indicates resolution of the difficulties with uncanceled divergences that plague methods based on Fock-space truncation.

Original language	English (US)
Pages (from-to)	323-329
Number of pages	7
Journal	Few-Body Systems
Volume	52
Issue number	3-4
DOIs	https://doi.org/10.1007/s00601-011-0269-y
State	Published - May 2012

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abstract = "As a test of the new light-front coupled-cluster method in a gauge theory, we apply it to the nonperturbative construction of the dressed-electron state in QED, for an arbitrary covariant gauge, and compute the electron's anomalous magnetic moment. The construction illustrates the spectator and Fock-sector independence of vertex and self-energy contributions and indicates resolution of the difficulties with uncanceled divergences that plague methods based on Fock-space truncation.",

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AB - As a test of the new light-front coupled-cluster method in a gauge theory, we apply it to the nonperturbative construction of the dressed-electron state in QED, for an arbitrary covariant gauge, and compute the electron's anomalous magnetic moment. The construction illustrates the spectator and Fock-sector independence of vertex and self-energy contributions and indicates resolution of the difficulties with uncanceled divergences that plague methods based on Fock-space truncation.

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Application of a Light-Front Coupled Cluster Method

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