Effective kinetic description of the expanding overoccupied glasma
Abstract
Here, we report on a numerical study of the Boltzmann equation including 2↔2 scatterings of gluons and quarks in an overoccupied glasma undergoing longitudinal expansion. We find that when a cascade of gluon number to the infrared occurs, corresponding to an infrared enhancement analogous to a transient Bose-Einstein condensate, gluon distributions qualitatively reproduce the results of classical-statistical simulations for the expanding glasma. These include key features of the distributions that are not anticipated in the “bottom-up” thermalization scenario. We also find that quark distributions, like those of gluons, satisfy self-similar scaling distributions in the overoccupied glasma. We discuss the implications of these results for a deeper understanding of the self-similarity and universality of parton distributions in the glasma.
- Authors:
-
- Univ. Heidelberg, Heidelberg (Germany)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1413971
- Alternate Identifier(s):
- OSTI ID: 1357940
- Report Number(s):
- BNL-114718-2017-JA
Journal ID: ISSN 2470-0010; PRVDAQ; TRN: US1800612
- Grant/Contract Number:
- SC0012704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review D
- Additional Journal Information:
- Journal Volume: 95; Journal Issue: 9; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Tanji, Naoto, and Venugopalan, Raju. Effective kinetic description of the expanding overoccupied glasma. United States: N. p., 2017.
Web. doi:10.1103/PhysRevD.95.094009.
Tanji, Naoto, & Venugopalan, Raju. Effective kinetic description of the expanding overoccupied glasma. United States. https://doi.org/10.1103/PhysRevD.95.094009
Tanji, Naoto, and Venugopalan, Raju. Fri .
"Effective kinetic description of the expanding overoccupied glasma". United States. https://doi.org/10.1103/PhysRevD.95.094009. https://www.osti.gov/servlets/purl/1413971.
@article{osti_1413971,
title = {Effective kinetic description of the expanding overoccupied glasma},
author = {Tanji, Naoto and Venugopalan, Raju},
abstractNote = {Here, we report on a numerical study of the Boltzmann equation including 2↔2 scatterings of gluons and quarks in an overoccupied glasma undergoing longitudinal expansion. We find that when a cascade of gluon number to the infrared occurs, corresponding to an infrared enhancement analogous to a transient Bose-Einstein condensate, gluon distributions qualitatively reproduce the results of classical-statistical simulations for the expanding glasma. These include key features of the distributions that are not anticipated in the “bottom-up” thermalization scenario. We also find that quark distributions, like those of gluons, satisfy self-similar scaling distributions in the overoccupied glasma. We discuss the implications of these results for a deeper understanding of the self-similarity and universality of parton distributions in the glasma.},
doi = {10.1103/PhysRevD.95.094009},
journal = {Physical Review D},
number = 9,
volume = 95,
place = {United States},
year = {Fri May 19 00:00:00 EDT 2017},
month = {Fri May 19 00:00:00 EDT 2017}
}
Web of Science
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Works referencing / citing this record:
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