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Title: Bose-Fermi cancellations without supersymmetry

Abstract

We show that adjoint QCD features very strong Bose-Fermi cancellations in the large- N limit, despite the fact that it is manifestly nonsupersymmetric. The difference between the bosonic and fermionic densities of states in large- N adjoint QCD turns out to have a “two-dimensional” scaling ~exp ( E ) for large energies E in finite spatial volume, where is a length scale associated with the curvature of the spatial manifold. In particular, all Hagedorn growth cancels, and so does the growth exp ( V 1 / 4 E 3 / 4 ) expected in a standard local four-dimensional theory in spatial volume V . In these ways, large- N adjoint QCD, a manifestly nonsupersymmetric theory, acts similarly to supersymmetric theories. We also show that at large- N the vacuum energy of multiflavor adjoint QCD is non-negative and exponentially small compared to the UV cutoff with several natural regulators.

Authors:
; ;
Publication Date:
Research Org.:
North Carolina State University, Raleigh, NC (United States); Univ. of Minnesota, Minneapolis, MN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)
OSTI Identifier:
1511093
Alternate Identifier(s):
OSTI ID: 1609461
Grant/Contract Number:  
FG02-03ER41260; SC0011842; NSF PHY17-48958
Resource Type:
Published Article
Journal Name:
Physical Review. D.
Additional Journal Information:
Journal Name: Physical Review. D. Journal Volume: 99 Journal Issue: 10; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Astronomy & Astrophysics; Physics

Citation Formats

Cherman, Aleksey, Shifman, Mikhail, and Ünsal, Mithat. Bose-Fermi cancellations without supersymmetry. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.99.105001.
Cherman, Aleksey, Shifman, Mikhail, & Ünsal, Mithat. Bose-Fermi cancellations without supersymmetry. United States. https://doi.org/10.1103/PhysRevD.99.105001
Cherman, Aleksey, Shifman, Mikhail, and Ünsal, Mithat. Tue . "Bose-Fermi cancellations without supersymmetry". United States. https://doi.org/10.1103/PhysRevD.99.105001.
@article{osti_1511093,
title = {Bose-Fermi cancellations without supersymmetry},
author = {Cherman, Aleksey and Shifman, Mikhail and Ünsal, Mithat},
abstractNote = {We show that adjoint QCD features very strong Bose-Fermi cancellations in the large-N limit, despite the fact that it is manifestly nonsupersymmetric. The difference between the bosonic and fermionic densities of states in large-N adjoint QCD turns out to have a “two-dimensional” scaling ~exp(ℓE) for large energies E in finite spatial volume, where ℓ is a length scale associated with the curvature of the spatial manifold. In particular, all Hagedorn growth cancels, and so does the growth exp(V1/4E3/4) expected in a standard local four-dimensional theory in spatial volume V. In these ways, large-N adjoint QCD, a manifestly nonsupersymmetric theory, acts similarly to supersymmetric theories. We also show that at large-N the vacuum energy of multiflavor adjoint QCD is non-negative and exponentially small compared to the UV cutoff with several natural regulators.},
doi = {10.1103/PhysRevD.99.105001},
journal = {Physical Review. D.},
number = 10,
volume = 99,
place = {United States},
year = {Tue May 07 00:00:00 EDT 2019},
month = {Tue May 07 00:00:00 EDT 2019}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevD.99.105001

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Cited by: 11 works
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