Published November 1990
| Version v1
Journal article
δ expansion for a quantum field theory in the nonperturbative regime
- 1. Department of Physics, Washington University, St. Louis, Missouri 63130 (USA)
- 2. Department of Physics and Astronomy, University of Oklahoma, Norman, OK (USA)
- 3. Department of Physics, The Ohio State University, Columbus, OH (USA)
- 4. The Santa Fe Institute, Santa Fe, NM (USA)
- 5. Theoretical Division, Los Alamos National Laboratory, Los Alamos, NM (USA)
Description
The δ expansion, a recently proposed nonperturbative technique in quantum field theory, is used to calculate the dimensionless renormalized coupling constant of a λ(var-phi 2)1+δ quantum field theory in d-dimensional space-time at the critical point defined by λ→∞ with the renormalized mass held fixed. The calculation is performed to leading order in δ and compared with previous lattice strong-coupling calculations. The numerical results are good and provide new evidence that the theory in four dimensions is free for all δ
Additional details
Publishing Information
- Journal Title
- Journal of Mathematical Physics (New York)
- Journal Volume
- 31
- Journal Issue
- 11
- Series
- J. Math. Phys. (N.Y.).
- Journal Page Range
- 2722-2725
- ISSN
- 0022-2488
- CODEN
- JMAPA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22023935
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- FOURIER TRANSFORMATION; GREEN FUNCTION; LAGRANGIAN FUNCTION; QUANTUM FIELD THEORY; RENORMALIZATION; SERIES EXPANSION
- Descriptors DEC
- FIELD THEORIES; FUNCTIONS; INTEGRAL TRANSFORMATIONS; TRANSFORMATIONS