Functional renormalization group approach to the Yang-Lee edge singularity

An, X.; Mesterhazy, David; Stephanov, M. A. (2016). Functional renormalization group approach to the Yang-Lee edge singularity. Journal of High Energy Physics, 2016(7) Springer 10.1007/JHEP07(2016)041

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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 ⋲ = 6 - d expansion and the conformal bootstrap. The relevance of operator insertions at the corresponding fixed point of the RG ß functions is discussed and we estimate the error associated with O(Ә⁴) truncations of the scale-dependent e ective action.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Mesterhazy, David

Subjects:

500 Science > 530 Physics

ISSN:

1029-8479

Publisher:

Springer

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

08 Aug 2016 13:25

Last Modified:

08 Aug 2016 13:25

Publisher DOI:

10.1007/JHEP07(2016)041

ArXiv ID:

1605.06039

BORIS DOI:

10.7892/boris.85289

URI:

https://boris.unibe.ch/id/eprint/85289

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