θ and the η ' in large N supersymmetric QCD
Abstract
Here, we study the large N θ dependence and the η' potential in supersymmetric QCD with small soft SUSYbreaking terms. Known exact results in SUSY QCD are found to reflect a variety of expectations from large N perturbation theory, including the presence of branches and the behavior of theories with matter (both with N _{f} << N and N _{f} ~ N ). But, there are also striking departures from ordinary QCD and the conventional large N description: instanton effects, when under control, are not exponentially suppressed at large N , and branched structure in supersymmetric QCD is always associated with approximate discrete symmetries. We suggest that these differences motivate further study of large N QCD on the lattice.
 Authors:

 Univ. of California, Santa Cruz, CA (United States). Santa Cruz Inst. for Particle Physics and Dept. of Physics
 Univ. of Massachusetts, Amherst, MA (United States). Amherst Center for Fundamental Interactions, Dept. of Physics
 Publication Date:
 Research Org.:
 Univ. of California, Santa Cruz, CA (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1389559
 Grant/Contract Number:
 FG0204ER41286
 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: 2017; Journal Issue: 5; Journal ID: ISSN 10298479
 Publisher:
 Springer Berlin
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Phase Diagram of QCD; Supersymmetric Effective Theories
Citation Formats
Dine, Michael, Draper, Patrick, StephensonHaskins, Laurel, and Xu, Di. θ and the η ' in large N supersymmetric QCD. United States: N. p., 2017.
Web. doi:10.1007/JHEP05(2017)122.
Dine, Michael, Draper, Patrick, StephensonHaskins, Laurel, & Xu, Di. θ and the η ' in large N supersymmetric QCD. United States. doi:10.1007/JHEP05(2017)122.
Dine, Michael, Draper, Patrick, StephensonHaskins, Laurel, and Xu, Di. Mon .
"θ and the η ' in large N supersymmetric QCD". United States. doi:10.1007/JHEP05(2017)122. https://www.osti.gov/servlets/purl/1389559.
@article{osti_1389559,
title = {θ and the η ' in large N supersymmetric QCD},
author = {Dine, Michael and Draper, Patrick and StephensonHaskins, Laurel and Xu, Di},
abstractNote = {Here, we study the large N θ dependence and the η' potential in supersymmetric QCD with small soft SUSYbreaking terms. Known exact results in SUSY QCD are found to reflect a variety of expectations from large N perturbation theory, including the presence of branches and the behavior of theories with matter (both with Nf << N and Nf ~ N ). But, there are also striking departures from ordinary QCD and the conventional large N description: instanton effects, when under control, are not exponentially suppressed at large N , and branched structure in supersymmetric QCD is always associated with approximate discrete symmetries. We suggest that these differences motivate further study of large N QCD on the lattice.},
doi = {10.1007/JHEP05(2017)122},
journal = {Journal of High Energy Physics (Online)},
number = 5,
volume = 2017,
place = {United States},
year = {2017},
month = {5}
}
Web of Science
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