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Quantum Field Theory and Critical Phenomena$
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Jean Zinn-Justin

Print publication date: 2002

Print ISBN-13: 9780198509233

Published to Oxford Scholarship Online: January 2010

DOI: 10.1093/acprof:oso/9780198509233.001.0001

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Uv Fixed Points In Quantum Field Theory

Uv Fixed Points In Quantum Field Theory

Chapter:
(p.817) 35 UV FIXED POINTS IN QUANTUM FIELD THEORY
Source:
Quantum Field Theory and Critical Phenomena
Author(s):

JEAN ZINN-JUSTIN

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780198509233.003.0035

Up to now, we have mainly discussed the IR behaviour of field theories. This chapter uses RG equations to characterize instead the large momentum behaviour of renormalized field theories. This assumes implicitly that a universal large momentum physics, that is, a property of the continuum, can be defned. This implies also the existence of a crossover scale between low and large momentum physics.

Keywords:   field theories, renormalization, large momentum physics

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