Classical Physics and Quantum Loops

Barry R. Holstein and John F. Donoghue
Phys. Rev. Lett. 93, 201602 – Published 11 November 2004

Abstract

The standard picture of the loop expansion associates a factor of with each loop, suggesting that the tree diagrams are to be associated with classical physics, while loop effects are quantum mechanical in nature. We discuss counterexamples wherein classical effects arise from loop diagrams and display the relationship between the classical terms and the long range effects of massless particles.

  • Figure
  • Received 13 July 2004

DOI:https://doi.org/10.1103/PhysRevLett.93.201602

©2004 American Physical Society

Authors & Affiliations

Barry R. Holstein1,2 and John F. Donoghue1

  • 1Department of Physics-LGRT, University of Massachusetts, Amherst, MA 01003, USA
  • 2Theory Group, Thomas Jefferson National Accelerator Laboratory, 12000 Jefferson Avenue, Newport News, VA 23606, USA

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Issue

Vol. 93, Iss. 20 — 12 November 2004

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