Journal
PHYSICAL REVIEW LETTERS
Volume 127, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.127.072301
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Funding
- U.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-FG0201ER41195]
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In the search for the QCD critical point using non-Gaussian fluctuations, evolution equations for non-Gaussian cumulants were obtained to the leading order of systematic expansion, with leading order contributions given by tree diagrams. A diagrammatic technique was developed for multipoint correlators using a Wigner transform, deriving evolution equations for three- and four-point Wigner functions for nonlinear stochastic diffusion with multiplicative noise.
In the context of the search for the QCD critical point using non-Gaussian fluctuations, we obtain the evolution equations for non-Gaussian cumulants to the leading order of the systematic expansion in the magnitude of thermal fluctuations. We develop a diagrammatic technique in which the leading order contributions are given by tree diagrams. We introduce a Wigner transform for multipoint correlators and derive the evolution equations for three- and four-point Wigner functions for the problem of nonlinear stochastic diffusion with multiplicative noise.
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