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Four loop anomalous dimensions of gradient operators in \({\phi^4}\) theory

  • S.É. Derkachov
  • J.A. Gracey
  • A.N. Manashov
Theoretical physics

Abstract.

We compute the anomalous dimensions of a set of composite operators which involve derivatives at four loops in \(\bar{\rm MS}\) in \(\phi^4\) theory as a function of the operator moment \(n\). These operators are similar to the twist-2 operators which arise in QCD in the operator product expansion in deep inelastic scattering. By regarding their inverse Mellin transform as being equivalent to the DGLAP splitting functions we explore to what extent taking a restricted set of operator moments can give a good approximation to the exact four loop result.

Keywords

Operator Product Anomalous Dimension Inelastic Scattering Operator Product Expansion Deep Inelastic Scattering 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • S.É. Derkachov
    • 1
  • J.A. Gracey
    • 2
  • A.N. Manashov
    • 3
  1. 1. Department of Mathematics, St Petersburg Technology Institute, Sankt Petersburg, Russia (e-mail: derk@tu.spb.ru) RU
  2. 2. Theoretical Physics Division, Department of Mathematical Sciences, University of Liverpool, Liverpool, L69 7ZF, United Kingdom (e-mail: jag@amtp.liv.ac.uk) GB
  3. 3. Department of Theoretical Physics, State University of St Petersburg, Sankt Petersburg, 198904 Russia (e-mail: manashov@snoopy.phys.spbu.ru) RU

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