Two point correlation function in scaling Lee-Yang model

Zamolodchikov, A.B.

doi:10.1016/0550-3213(91)90207-E

Two point correlation function in scaling Lee-Yang model

A.B. Zamolodchikov
(
- SISSA, Trieste
)

Apr, 1990

23 pages

Published in:

Nucl.Phys.B 348 (1991) 619-641

Published: 1991

DOI:

10.1016/0550-3213(91)90207-E

Report number:

SISSA-44/90/EP

View in:

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Abstract: (Elsevier)

The structure of the UV singularity in the two-point correlation function is considered for the scaling Lee-Yang model. Both perturbative and nonperturbative corrections to UV conformal theory are discussed. The IR convergent perturbation theory for the structure functions of operator algebra is developed and the first-order corrections are calculated explicitly. The UV expansion is compared numerically with the results of partial summation over intermediate asymptotic states. These two expansions match well in the intermediate region and give a reasonable precision data for the correlation function in the whole region of scaling distances.

Lee-Yang model
dimension: 2
two-point function
field theory: conformal
operator product expansion
perturbation theory: higher-order
asymptotic behavior
scaling
numerical calculations

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