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Title: Functional renormalization group approach to the Yang-Lee edge singularity

Abstract

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.

Authors:
 [1];  [2];  [1]
  1. Univ. of Illinois, Chicago, IL (United States)
  2. Univ. of Bern, Bern (Switzerland)
Publication Date:
Research Org.:
Univ. of Illinois at Chicago, Chicago, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1361392
Grant/Contract Number:  
FG02-01ER41195
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Volume: 2016; Journal Issue: 7; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; field theories in higher dimensions; renormalization group; nonperturbative effects

Citation Formats

An, X., Mesterházy, D., and Stephanov, M. A. Functional renormalization group approach to the Yang-Lee edge singularity. United States: N. p., 2016. Web. doi:10.1007/JHEP07(2016)041.
An, X., Mesterházy, D., & Stephanov, M. A. Functional renormalization group approach to the Yang-Lee edge singularity. United States. doi:10.1007/JHEP07(2016)041.
An, X., Mesterházy, D., and Stephanov, M. A. Fri . "Functional renormalization group approach to the Yang-Lee edge singularity". United States. doi:10.1007/JHEP07(2016)041. https://www.osti.gov/servlets/purl/1361392.
@article{osti_1361392,
title = {Functional renormalization group approach to the Yang-Lee edge singularity},
author = {An, X. and Mesterházy, D. and Stephanov, M. A.},
abstractNote = {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.},
doi = {10.1007/JHEP07(2016)041},
journal = {Journal of High Energy Physics (Online)},
issn = {1029-8479},
number = 7,
volume = 2016,
place = {United States},
year = {2016},
month = {7}
}

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