Use of the double dispersion relation in QCD sum rules with external fields

Details Use of the double dispersion relation in QCD sum rules with external fields Use of the double dispersion relation in QCD sum rules with external fields

1999-06-26

arxiv.org/abs/nucl-th/9906081v2

Prog.Theor.Phys. 103 (2000) 1001-1009

Physics

Nuclear Physics

Nuclear Theory

10 pages, slightly revised, accepted for publication in Progress of Theoretical Physics

Scientific paper

10.1143/PTP.103.1001

In QCD sum rules with external fields, the double dispersion relation is often used to represent the correlation function. In this work, we point out that the double spectral density, when it is determined by successive applications of the Borel transformation, contains the spurious terms which should be kept in the subtraction terms in the double dispersion relation. They are zero under the Borel transformation but, if the dispersion integral is restricted with QCD duality, they contribute to the continuum. For the simple case with zero external momentum, it is shown that subtracting out the spurious terms is equivalent to the QCD sum rules represented by the single dispersion relation.

Affiliated with

Also associated with

No associations

Rating

Use of the double dispersion relation in QCD sum rules with external fields does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Use of the double dispersion relation in QCD sum rules with external fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Use of the double dispersion relation in QCD sum rules with external fields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-60905