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https://hdl.handle.net/2440/69660
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Type: | Journal article |
Title: | Bosonic stringlike behavior and the ultraviolet filtering of QCD |
Author: | El Bakry Mahmoud, A. Leinweber, D. Williams, A. |
Citation: | Physical Review D: Particles, Fields, Gravitation and Cosmology, 2012; 85(3):1-8 |
Publisher: | American Physical Soc |
Issue Date: | 2012 |
ISSN: | 1550-7998 1550-2368 |
Organisation: | Special Research Centre for the Subatomic Structure of Matter |
Statement of Responsibility: | Ahmed S. Bakry, Derek B. Leinweber, and Anthony G. Williams |
Abstract: | The gluonic action density is calculated in static mesons at finite temperature just below the deconfinement point. Our focus is to elucidate the role of vacuum ultraviolet fluctuations which are filtered using an improved smearing algorithm. In the intermediate source separation distance, where the free string picture poorly describes the flux tube width profile, we find upon reducing the vacuum action towards the classical instanton vacuum, the characteristics of the flux tube converge and compare favorably with the predictions of the free bosonic string. This result establishes a connection between the free string action and vacuum gauge fields and reveals the important role of ultraviolet physics in understanding the lattice data at this temperature scale. As a by-product of these calculations, we find the broadening of the QCD flux tube to be independent of the ultraviolet filtering at large distances. Our results exhibit a linearly divergent pattern in agreement with the string picture predictions. |
Keywords: | ultraviolet filtering smearing Bosonic strings flux tubes |
Rights: | ©2012 American Physical Society |
DOI: | 10.1103/PhysRevD.85.034504 |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.1103/physrevd.85.034504 |
Appears in Collections: | Aurora harvest 5 Physics publications |
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hdl_69660.pdf | Published version | 393.4 kB | Adobe PDF | View/Open |
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