On the Limits of Chiral Perturbation Theory

Abstract

We consider the relation between the breakdown scale of chiral perturbation theory, ${\Lambda }_{\chi }$, for large values of $N$ (flavor), and the scale associated with ``new" physical thresholds. This question is addressed using both the linear $\sigma$ model and an asymptotically-free gauge theory to describe the high energy dynamics. It is suggested that the massive physical threshold could be well above ${\Lambda }_{\chi }$.

13 pages, Latex, YCTP-P41-92; we have clarified some of the discussions, the conclusions are unchanged

References in corpus (2)

• Analyticity, Crossing Symmetry and the Limits of Chiral Perturbation Theory
• Electroweak Corrections in Technicolor Reconsidered

Cited by in corpus (5)

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• An Extended Technicolor Model
• The Electroweak Chiral Lagrangian and CP-Violating Effects in Technicolor Theories
• On the consistency of the N=1 SYM spectra from wrapped five-branes
• The Implications of Naturalness in Effective Field Theory on the Masses of Resonances