Journal
PHYSICAL REVIEW D
Volume 95, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.95.025012
Keywords
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Funding
- Danish National Research Foundation Grant [DNRF90]
- U.S. NSF Grant [NSF-PHY-16-1620628]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1620628] Funding Source: National Science Foundation
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We investigate whether the beta function of the finite-N Gross-Neveu model, as calculated up to the four-loop level, exhibits evidence for an infrared zero. As part of our analysis, we calculate and analyze Pade approximants to this beta function and evaluate effects of scheme dependence. From our study, we find that in the range of coupling where the perturbative calculation of the four-loop beta function is reliable, it does not exhibit robust evidence for an infrared zero.
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