Journal article 966 views
Remarks on stable and quasi-stable k-strings at large N
Nuclear Physics B, Volume: "B671", Pages: 67 - 94
Swansea University Author: Adi Armoni
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DOI (Published version): 10.1016/j.nuclphysb.2003.08.021
Abstract
We discuss k-strings in the large-N Yang-Mills theory and its supersymmetric extension. Whereas the tension of the bona fide (stable) QCD string is expected to depend only on the N-ality of the representation, tensions that depend on specific representation R are often reported in the lattice litera...
Published in: | Nuclear Physics B |
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ISSN: | 05503213 |
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2003
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URI: | https://cronfa.swan.ac.uk/Record/cronfa28669 |
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2016-06-04T06:08:28.5080939 v2 28669 2016-06-04 Remarks on stable and quasi-stable k-strings at large N 3f75faad0563a2d3b191191a2efee956 0000-0002-8105-0645 Adi Armoni Adi Armoni true false 2016-06-04 SPH We discuss k-strings in the large-N Yang-Mills theory and its supersymmetric extension. Whereas the tension of the bona fide (stable) QCD string is expected to depend only on the N-ality of the representation, tensions that depend on specific representation R are often reported in the lattice literature. In particular, adjoint strings are discussed and found in certain simulations. We clarify this issue by systematically exploiting the notion of the quasi-stable strings which becomes well-defined at large N. The quasi-stable strings with representation-dependent tensions decay, but the decay rate (per unit length per unit time) is suppressed as Lambda^2 F(N) where F(N) falls off as a function of N. It can be determined on the case-by-case basis. The quasi-stable strings eventually decay into stable strings whose tension indeed depends only on the N-ality. We also briefly review large-N arguments showing why the Casimir formula for the string tension cannot be correct, and present additional arguments in favor of the sine formula. Finally, we comment on the relevance of our estimates to Euclidean lattice Journal Article Nuclear Physics B "B671" 67 94 05503213 31 7 2003 2003-07-31 10.1016/j.nuclphysb.2003.08.021 http://inspirehep.net/record/622531 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2016-06-04T06:08:28.5080939 2016-06-04T06:08:28.3052926 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics M. Shifman 1 Adi Armoni 0000-0002-8105-0645 2 |
title |
Remarks on stable and quasi-stable k-strings at large N |
spellingShingle |
Remarks on stable and quasi-stable k-strings at large N Adi Armoni |
title_short |
Remarks on stable and quasi-stable k-strings at large N |
title_full |
Remarks on stable and quasi-stable k-strings at large N |
title_fullStr |
Remarks on stable and quasi-stable k-strings at large N |
title_full_unstemmed |
Remarks on stable and quasi-stable k-strings at large N |
title_sort |
Remarks on stable and quasi-stable k-strings at large N |
author_id_str_mv |
3f75faad0563a2d3b191191a2efee956 |
author_id_fullname_str_mv |
3f75faad0563a2d3b191191a2efee956_***_Adi Armoni |
author |
Adi Armoni |
author2 |
M. Shifman Adi Armoni |
format |
Journal article |
container_title |
Nuclear Physics B |
container_volume |
"B671" |
container_start_page |
67 |
publishDate |
2003 |
institution |
Swansea University |
issn |
05503213 |
doi_str_mv |
10.1016/j.nuclphysb.2003.08.021 |
college_str |
Faculty of Science and Engineering |
hierarchytype |
|
hierarchy_top_id |
facultyofscienceandengineering |
hierarchy_top_title |
Faculty of Science and Engineering |
hierarchy_parent_id |
facultyofscienceandengineering |
hierarchy_parent_title |
Faculty of Science and Engineering |
department_str |
School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics |
url |
http://inspirehep.net/record/622531 |
document_store_str |
0 |
active_str |
0 |
description |
We discuss k-strings in the large-N Yang-Mills theory and its supersymmetric extension. Whereas the tension of the bona fide (stable) QCD string is expected to depend only on the N-ality of the representation, tensions that depend on specific representation R are often reported in the lattice literature. In particular, adjoint strings are discussed and found in certain simulations. We clarify this issue by systematically exploiting the notion of the quasi-stable strings which becomes well-defined at large N. The quasi-stable strings with representation-dependent tensions decay, but the decay rate (per unit length per unit time) is suppressed as Lambda^2 F(N) where F(N) falls off as a function of N. It can be determined on the case-by-case basis. The quasi-stable strings eventually decay into stable strings whose tension indeed depends only on the N-ality. We also briefly review large-N arguments showing why the Casimir formula for the string tension cannot be correct, and present additional arguments in favor of the sine formula. Finally, we comment on the relevance of our estimates to Euclidean lattice |
published_date |
2003-07-31T03:34:55Z |
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1763751489243709440 |
score |
11.035349 |