A New Constraint on Strongly Coupled Field Theories

Details A New Constraint on Strongly Coupled Field Theories A New Constraint on Strongly Coupled Field Theories

1999-01-22

arxiv.org/abs/hep-th/9901109v2

Phys.Rev.D60:045003,1999

Physics

High Energy Physics

High Energy Physics - Theory

28 pages, embedded figure

Scientific paper

10.1103/PhysRevD.60.045003

We propose a new constraint on the structure of strongly coupled field theories. The constraint takes the form of an inequality limiting the number of degrees of freedom in the infrared description of a theory relative to the number of underlying, ultraviolet degrees of freedom. We apply the inequality to a variety of theories (both supersymmetric and nonsupersymmetric), where it agrees with all known results and leads to interesting new constraints on low energy spectra. We discuss the relation of this constraint to Renormalization Group c-theorems.

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