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Title: Infrared dynamics of a large N QCD model, the massless string sector and mesonic spectra

Abstract

A consistency check for any UV complete model for large N QCD should be, among other things, the existence of a well-defined vector and scalar mesonic spectra. In this paper, we use our UV complete model in type IIB string theory to study the IR dynamics and use this to predict the mesonic spectra in the dual type IIA side. The advantage of this approach is two-fold: not only will this justify the consistency of the supergravity approach, but it will also give us a way to compare the IR spectra and the model with the ones proposed earlier by Sakai and Sugimoto. Interestingly, the spectra coming from the massless stringy sector are independent of the UV physics, although the massive string sector may pose certain subtleties regarding the UV contributions as well as the mappings to actual QCD. Additionally, we find that a component of the string landscape enters the picture: there are points in the landscape where the spectra can be improved somewhat over the existing results in the literature. These points in the landscape in-turn also determine certain background supergravity components and fix various pathologies that eventually lead to a consistent low energy description of the theory.

Authors:
 [1];  [1];  [2];  [1];  [1]
  1. McGill Univ., Montreal, QC (Canada). Physics Dept.
  2. Purdue Univ., West Lafayette, IN (United States). Dept. of Physics
Publication Date:
Research Org.:
Purdue Univ., West Lafayette, IN (United States); McGill Univ., Montreal, QC (Canada)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); Natural Sciences and Engineering Research Council of Canada (NSERC); Fonds de recherche du Québec - Nature et technologies (FRQNT) (Canada)
OSTI Identifier:
1454532
Grant/Contract Number:  
SC0007884
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2015; Journal Issue: 7; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; D-branes; AdS-CFT correspondence; holography and quark-gluon plasmas

Citation Formats

Dasgupta, Keshav, Gale, Charles, Mia, Mohammed, Richard, Michael, and Trottier, Olivier. Infrared dynamics of a large N QCD model, the massless string sector and mesonic spectra. United States: N. p., 2015. Web. doi:10.1007/JHEP07(2015)122.
Dasgupta, Keshav, Gale, Charles, Mia, Mohammed, Richard, Michael, & Trottier, Olivier. Infrared dynamics of a large N QCD model, the massless string sector and mesonic spectra. United States. doi:10.1007/JHEP07(2015)122.
Dasgupta, Keshav, Gale, Charles, Mia, Mohammed, Richard, Michael, and Trottier, Olivier. Thu . "Infrared dynamics of a large N QCD model, the massless string sector and mesonic spectra". United States. doi:10.1007/JHEP07(2015)122. https://www.osti.gov/servlets/purl/1454532.
@article{osti_1454532,
title = {Infrared dynamics of a large N QCD model, the massless string sector and mesonic spectra},
author = {Dasgupta, Keshav and Gale, Charles and Mia, Mohammed and Richard, Michael and Trottier, Olivier},
abstractNote = {A consistency check for any UV complete model for large N QCD should be, among other things, the existence of a well-defined vector and scalar mesonic spectra. In this paper, we use our UV complete model in type IIB string theory to study the IR dynamics and use this to predict the mesonic spectra in the dual type IIA side. The advantage of this approach is two-fold: not only will this justify the consistency of the supergravity approach, but it will also give us a way to compare the IR spectra and the model with the ones proposed earlier by Sakai and Sugimoto. Interestingly, the spectra coming from the massless stringy sector are independent of the UV physics, although the massive string sector may pose certain subtleties regarding the UV contributions as well as the mappings to actual QCD. Additionally, we find that a component of the string landscape enters the picture: there are points in the landscape where the spectra can be improved somewhat over the existing results in the literature. These points in the landscape in-turn also determine certain background supergravity components and fix various pathologies that eventually lead to a consistent low energy description of the theory.},
doi = {10.1007/JHEP07(2015)122},
journal = {Journal of High Energy Physics (Online)},
number = 7,
volume = 2015,
place = {United States},
year = {2015},
month = {7}
}

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Works referenced in this record:

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