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Bose-Fermi degeneracies in large N adjoint QCD

Basar, Gökçe ; Cherman, Aleksey ; McGady, David

The journal of high energy physics, 2015-07, Vol.2015 (7), p.1-36 [Periódico revisado por pares]

Berlin/Heidelberg: Springer Berlin Heidelberg

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Título:
Bose-Fermi degeneracies in large N adjoint QCD
Autor: Basar, Gökçe ; Cherman, Aleksey ; McGady, David
Assuntos: 1/N Expansion ; Adjoints ; Cancellation ; Classical and Quantum Gravitation ; Confinement ; Confining ; Elementary Particles ; Fermions ; Flavor (particle physics) ; High energy physics ; Mathematical analysis ; Physics ; Physics and Astronomy ; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; Quantum chromodynamics ; Quantum Field Theories ; Quantum Field Theory ; Quantum Physics ; Regular Article - Theoretical Physics ; Relativity Theory ; String Theory ; Symmetry
É parte de: The journal of high energy physics, 2015-07, Vol.2015 (7), p.1-36
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
SC0011842; FG02-88ER40388; FG02-93ER40762
USDOE Office of Science (SC)
Descrição: A bstract We analyze the large N limit of adjoint QCD, an SU( N ) gauge theory with N f flavors of massless adjoint Majorana fermions, compactified on S 3 × S 1 . We focus on the weakly-coupled confining small- S 3 regime. If the fermions are given periodic boundary conditions on S 1 , we show that there are large cancellations between bosonic and fermionic contributions to the twisted partition function. These cancellations follow a pattern previously seen in the context of misaligned supersymmetry, and lead to the absence of Hagedorn instabilities for any S 1 size L , even though the bosonic and fermionic densities of states both have Hagedorn growth. Adjoint QCD stays in the confining phase for any L ∼ N 0 , explaining how it is able to enjoy large N volume independence for any L . The large N boson-fermion cancellations take place in a setting where adjoint QCD is manifestly non-supersymmetric at any finite N , and are consistent with the recent conjecture that adjoint QCD has emergent fermionic symmetries in the large N limit.
Editor: Berlin/Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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Bose-Fermi degeneracies in large N adjoint QCD

Basar, Gökçe ; Cherman, Aleksey ; McGady, David

Berlin/Heidelberg: Springer Berlin Heidelberg

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