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Functional renormalization group approach to the Yang-Lee edge singularity

Journal Article · · Journal of High Energy Physics (Online)
 [1];  [2];  [3]
  1. 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.
  2. Univ. of Bern, Bern (Switzerland)
  3. 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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Cited By (4)

A functional perspective on emergent supersymmetry journal December 2017
On spinodal points and Lee-Yang edge singularities journal March 2018
Functional perturbative RG and CFT data in the $$\epsilon $$ ϵ -expansion journal January 2018
On spinodal points and Lee-Yang edge singularities text January 2018

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