Cited by 1,064Theoretical and Computational PhysicsQuantum Chromodynamics and Particle InteractionsParticle physics theoretical and experimental studies

THE EXACT RENORMALIZATION GROUP AND APPROXIMATE SOLUTIONS

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MORRIS, TIM R.·1994·International Journal of Modern Physics A

Abstract

We investigate the structure of Polchinski’s formulation of the flow equations for the continuum Wilson effective action. Reinterpretations in terms of I.R. cutoff Green’s functions are given. A promising nonperturbative approximation scheme is derived by carefully taking the sharp cutoff limit and expanding in “irrelevancy” of operators. We illustrate with two simple models of four-dimensional λφ 4 theory: the cactus approximation, and a model incorporating the first irrelevant correction to the renormalized coupling. The qualitative and quantitative behaviour give confidence in a fuller use of this method for obtaining accurate results.

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Research works printed but not linked: 4

  1. [4][4] M. Salmhofer, Nucl. Phys. B (Proc. Suppl.) 30 (1993) 81 -
  2. [5][5] M. Bonini, M. D'Attanasio and G. Marchesini, Universit` a di Parma preprint UPRF 92-360 -
  3. [9][9] U. Ellwanger and L. Vergara, (1992) Heidelberg preprint HD-THEP-92-49 -
  4. [19][19] D. Morgan, Ph.D. thesis (1991) University of Texas, Austin. -

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Authors
MORRIS, T. R.
Affiliations
European Organization for Nuclear Research (CH)
Corresponding author
MORRIS, TIM R.
Venue
International Journal of Modern Physics A
Published
1994-06-10
Volume
09
Issue
14
Pages
2411-2449
ISSN
  • 0217-751X (ISSN-L)
  • 1793-656X
OpenAlex
W2599891974
Cited by
1,064
References
7
Citations by year
2026: 33 · 2025: 56 · 2024: 62 · 2023: 71 · 2022: 73 · 2021: 102 · 2020: 62 · 2019: 63 · 2018: 55 · 2017: 51 · 2016: 50 · 2015: 35 · 2014: 21 · 2013: 19 · 2012: 17
FWCI
9.30
Type
journal article
Language
en
Open access
Locations
  • International Journal of Modern Physics A (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Condensed Matter Physics › Theoretical and Computational Physics
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Quantum Chromodynamics and Particle Interactions
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Particle physics theoretical and experimental studies
Keywords
exact renormalization group, phi^4 theory, renormalized coupling constant, four-dimensional field theory

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