Item – Thèses Canada

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Numéro d'OCLC
870982857
Lien(s) vers le texte intégral
Exemplaire de BAC
Auteur
Chen, Long,
Titre
A ultraviolet complete large N thermal QCD model : renormalization group flow and mesonic spectra
Diplôme
M. Sc. -- McGill University, 2013
Éditeur
[Montréal] : McGill University Libraries, [2013]
Description
1 online resource
Notes
Thesis supervisor: Keshav Dasgupta (Internal/Supervisor).
Includes bibliographical references.
Résumé
"The large N thermal Quantum Chromodynamics (QCD) that we study here is a generalization of SU(3) QCD with two gauge groups at high energy scales, i.e. in the ultraviolet (UV). Both gauge groups are related to N as SU(N)×SU(kN) with k <1. In our construction, we have a model that has a complete UV description, as well as a low energy, i.e. infrared (IR), behaviour that mimicks that of QCD. Our model has three regions. The IR region is the well known cascading model with extensions to include favours. The two gauge groups of this theory reduce to a single SU(kN) group which then confines. The UV region uses congurations from type IIB string theory on the conifold to describe the dynamics. The intermediate region smoothly connects the two, i.e. the UV and the IR, so that we have a complete model for all energy scales. All regions are related to the gauge theory by gauge/gravity duality. In particular, we analyze the renormalization group (RG) flow of the gauge coupling in the effective field theory. We see that it asymptotically approaches a constant at high energies and flows toward permanent confinement as energy scale decreases. In the IR, we obtain the mesonic spectrum by compactifying extra dimensions and analyzing the wave functions in Minkowski space-time."--
Autre lien(s)
digitool.Library.McGill.CA
digitool.library.mcgill.ca
Sujet
Physics Theory