Functional renormalization group approach to the Yang-Lee edge singularity
Journal Article
·
· Journal of High Energy Physics (Online)
- Univ. of Illinois, Chicago, IL (United States); Department of Physics, University of Illinois at Chicago, 845 W. Taylor St., Chicago, IL 60607, U.S.A.
- Univ. of Bern, Bern (Switzerland)
- Univ. of Illinois, Chicago, IL (United States)
Here, we determine the scaling properties of the Yang-Lee edge singularity as described by a one-component scalar field theory with imaginary cubic coupling, using the nonperturbative functional renormalization group in 3 ≤ d ≤ 6 Euclidean dimensions. We find very good agreement with high-temperature series data in d = 3 dimensions and compare our results to recent estimates of critical exponents obtained with the four-loop ϵ = 6 - d expansion and the conformal bootstrap. The relevance of operator insertions at the corresponding fixed point of the RG β functions is discussed and we estimate the error associated with O(∂4) truncations of the scale-dependent effective action.
- Research Organization:
- Univ. of Illinois at Chicago, Chicago, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
- Grant/Contract Number:
- FG02-01ER41195
- OSTI ID:
- 1361392
- Alternate ID(s):
- OSTI ID: 22610215
- Journal Information:
- Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 7 Vol. 2016; ISSN 1029-8479
- Publisher:
- Springer BerlinCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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