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Title: Shear-viscosity to entropy-density ratio from giant dipole resonances in hot nuclei

Abstract

The Green-Kubo relation and fluctuation-dissipation theorem are employed to calculate the shear viscosity {eta} of a finite hot nucleus directly from the width and energy of the giant dipole resonance (GDR) of this nucleus. The ratio {eta}/s of shear viscosity {eta} to entropy density s is extracted from the experimental systematics of the GDR in copper, tin, and lead isotopes at finite temperature T. These empirical results are then compared with the predictions by several independent models as well as with almost model-independent estimations. Based on these results, it is concluded that the ratio {eta}/s in medium and heavy nuclei decreases with increasing temperature T to reach (1.3--4)x({h_bar}/2{pi})/(4{pi}k{sub B}) at T=5 MeV.

Authors:
 [1]
  1. Theoretical Nuclear Physics Laboratory, RIKEN Nishina Center for Accelerator-Based Science, 2-1 Hirosawa, Wako City, 351-0198 Saitama (Japan) and Institute for Nuclear Science and Technique, Hanoi (Viet Nam)
Publication Date:
OSTI Identifier:
21596740
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.84.034309; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; COPPER ISOTOPES; DIPOLES; ENTROPY; FLUCTUATIONS; FORECASTING; GIANT RESONANCE; HEAVY NUCLEI; HOT NUCLEI; LEAD ISOTOPES; MEV RANGE 01-10; RESONANCE; TIN ISOTOPES; VISCOSITY; ENERGY RANGE; ISOTOPES; MEV RANGE; MULTIPOLES; NUCLEI; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; VARIATIONS

Citation Formats

Dang, Nguyen Dinh. Shear-viscosity to entropy-density ratio from giant dipole resonances in hot nuclei. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.84.034309.
Dang, Nguyen Dinh. Shear-viscosity to entropy-density ratio from giant dipole resonances in hot nuclei. United States. https://doi.org/10.1103/PHYSREVC.84.034309
Dang, Nguyen Dinh. 2011. "Shear-viscosity to entropy-density ratio from giant dipole resonances in hot nuclei". United States. https://doi.org/10.1103/PHYSREVC.84.034309.
@article{osti_21596740,
title = {Shear-viscosity to entropy-density ratio from giant dipole resonances in hot nuclei},
author = {Dang, Nguyen Dinh},
abstractNote = {The Green-Kubo relation and fluctuation-dissipation theorem are employed to calculate the shear viscosity {eta} of a finite hot nucleus directly from the width and energy of the giant dipole resonance (GDR) of this nucleus. The ratio {eta}/s of shear viscosity {eta} to entropy density s is extracted from the experimental systematics of the GDR in copper, tin, and lead isotopes at finite temperature T. These empirical results are then compared with the predictions by several independent models as well as with almost model-independent estimations. Based on these results, it is concluded that the ratio {eta}/s in medium and heavy nuclei decreases with increasing temperature T to reach (1.3--4)x({h_bar}/2{pi})/(4{pi}k{sub B}) at T=5 MeV.},
doi = {10.1103/PHYSREVC.84.034309},
url = {https://www.osti.gov/biblio/21596740}, journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 3,
volume = 84,
place = {United States},
year = {Thu Sep 15 00:00:00 EDT 2011},
month = {Thu Sep 15 00:00:00 EDT 2011}
}