Unequal rapidity correlators in the dilute limit of the JIMWLK evolution
Lappi, T., & Ramnath, A. (2019). Unequal rapidity correlators in the dilute limit of the JIMWLK evolution. Physical Review D, 100(5), Article 054003. https://doi.org/10.1103/PhysRevD.100.054003
Published inPhysical Review D
© The Authors 2019
We study unequal rapidity correlators in the stochastic Langevin picture of Jalilian-Marian–Iancu–McLerran–Weigert–Leonidov–Kovner (JIMWLK) evolution in the color glass condensate effective field theory. We discuss a diagrammatic interpretation of the long-range correlators. By separately evolving the Wilson lines in the direct and complex conjugate amplitudes, we use the formalism to study two-particle production at large rapidity separations. We show that the evolution between the rapidities of the two produced particles can be expressed as a linear equation, even in the full nonlinear limit. We also show how the Langevin formalism for two-particle correlations reduces to a Balitsky-Fadin-Kuraev-Lipatov (BFKL) picture in the dilute limit and in momentum space, providing an interpretation of BFKL evolution as a stochastic process for color charges.
PublisherAmerican Physical Society
Publication in research information system
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Related funder(s)Academy of Finland; European Commission
Funding program(s)Research post as Academy Research Fellow, AoF; Research costs of Academy Research Fellow, AoF
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingT.L. has been supported by the Academy of Finland,ProjectsNo.267321 and No. 303756. A.R. is supported by the National Research Foundation of South Africa. This work has been supported by the European Research Council, Grant No. ERC-2015-CoG-681707.
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