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Title: Bosonic and Baryonic String Theory in Quantum Chromodynamics

Abstract

Bosonic string formation in gauge theories is reviewed with particular attention to the confining flux in lattice QCD and its effective string theory description. Recent results on the Casimir energy of the ground state and the string excitation spectrum are analyzed in the Dirichlet string limit of large separation between static sources. The closed string-soliton (torelon) with electric flux winding around a compact dimension is discussed and a new bound state tower spectrum at baryon string junctions is presented.

Authors:
 [1]
  1. Department of Physics, University of California, San Diego, La Jolla, California 92093 (United States)
Publication Date:
OSTI Identifier:
21056804
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 892; Journal Issue: 1; Conference: QCHS7: 7. conference on quark confinement and the hadron spectrum, Ponta Delgada, Acores (Portugal), 2-7 Sep 2006; Other Information: DOI: 10.1063/1.2714369; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BARYONS; BOSONS; BOUND STATE; EXCITATION; GAUGE INVARIANCE; GROUND STATES; LATTICE FIELD THEORY; QUANTUM CHROMODYNAMICS; SOLITONS; STRING MODELS; STRING THEORY

Citation Formats

Kuti, Julius. Bosonic and Baryonic String Theory in Quantum Chromodynamics. United States: N. p., 2007. Web. doi:10.1063/1.2714369.
Kuti, Julius. Bosonic and Baryonic String Theory in Quantum Chromodynamics. United States. doi:10.1063/1.2714369.
Kuti, Julius. Tue . "Bosonic and Baryonic String Theory in Quantum Chromodynamics". United States. doi:10.1063/1.2714369.
@article{osti_21056804,
title = {Bosonic and Baryonic String Theory in Quantum Chromodynamics},
author = {Kuti, Julius},
abstractNote = {Bosonic string formation in gauge theories is reviewed with particular attention to the confining flux in lattice QCD and its effective string theory description. Recent results on the Casimir energy of the ground state and the string excitation spectrum are analyzed in the Dirichlet string limit of large separation between static sources. The closed string-soliton (torelon) with electric flux winding around a compact dimension is discussed and a new bound state tower spectrum at baryon string junctions is presented.},
doi = {10.1063/1.2714369},
journal = {AIP Conference Proceedings},
number = 1,
volume = 892,
place = {United States},
year = {Tue Feb 27 00:00:00 EST 2007},
month = {Tue Feb 27 00:00:00 EST 2007}
}
  • In quenched QCD, where the dynamic creation of quark-antiquark pairs out of the vacuum is neglected, a confined baryonic system composed of three static quarks exhibits stringlike behavior at large interquark separation, with the formation of flux tubes characterized by the geometry of the so-called Y ansatz. We study the fluctuations of the junction of the three flux tubes, assuming the dynamics to be governed by an effective bosonic string model. We show that the asymptotic behavior of the effective width of the junction grows logarithmically with the distance between the sources, with the coefficient depending on the number ofmore » joining strings, on the dimension of spacetime and on the string tension.« less
  • Quantum corrections to the tachyon amplitude are computed perturbatively using Polyakov's method of quantization for the bosonic string. The tachyonic pole is eliminated for dimension {ital D}{ge}13.
  • A procedure is described for obtaining new exact solutions for the purely cubic form of Witten's bosonic string field theory. These solutions do not correspond to conformally invariant sigma models. Some of them have no tachyons in their spectrum of linearized fluctuations (but may have negative-norm states). Others make no reference to a space-time metric.
  • Using the methods of thermo field dynamics and conformal field theory, we have constructed the open-bosonic-string field theory with reparametrization and Becchi-Rouet-Stora-Tyutin invariances. The temperature independence of the critical dimension is also demonstrated.
  • We investigate the structure of a general multiloop amplitude in open-bosonic-string theory. We show that any connected part of the {ital S} matrix can be constructed from three kinds of multiloop tadpole, one-loop nonplanar self-energy, and trees due to duality. A separate discussion for the unconnected part is also given. Some rules for calculating a general multiloop amplitude and explicit results for the nonorientable and nonplanar multiloop amplitudes are given in the framework of the Becchi-Rouet-Stora-Tyutin-invariant operator formalism.