Anomaly matching for the QCD string

Details Anomaly matching for the QCD string Anomaly matching for the QCD string

1993-04-19

arxiv.org/abs/hep-th/9304079v2

Phys.Rev.D48:5471-5474,1993

Physics

High Energy Physics

High Energy Physics - Theory

Latex file, 8 pages, COLO-HEP/313, AZPH-TH/93-10

Scientific paper

10.1103/PhysRevD.48.R5471

A criterion to be satisfied by a string theory of QCD is formulated in the ultraviolet regime. It arises from the trace anomaly of the QCD stress tensor computed using instantons. It is sensitive to asymptotic freedom. It appears to be related to the trace anomaly of the QCD string. Our current understanding of noncritical strings in physical dimensions is limited, but remarkably, a formal treatment of the bosonic string yields numerical agreement both in magnitude and sign for the gauge group SU(2).

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