From superYang-Mills theory to QCD: Planar equivalence and its implications
Mar, 2004106 pages
Part of From fields to strings: Circumnavigating theoretical physics. Ian Kogan memorial collection (3 volume set), 353-444
Contribution to:
e-Print:
- hep-th/0403071 [hep-th]
Report number:
- CERN-PH-TH-2004-022-B,
- FTPI-MINN-04-01,
- UMN-TH-2228-04
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Abstract:
We review and extend our recent work on the planar (large N) equivalence between gauge theories with varying degree of supersymmetry. The main emphasis is made on the planar equivalence between N=1 gluodynamics (super-Yang-Mills theory) and a non-supersymmetric orientifold field theory. We outline an orientifold large N expansion, analyze its possible phenomenological consequences in one-flavor massless QCD, and make a first attempt at extending the correspondence to three massless flavors. An analytic calculation of the quark condensate in one-flavor QCD starting from the gluino condensate in N=1 gluodynamics is thoroughly discussed. We also comment on a planar equivalence involving N=2 supersymmetry, on chiral rings in non-supersymmetric theories, and on the origin of planar equivalence from an underlying, non-tachyonic type-0 string theory. Finally, possible further directions of investigation, such as the gauge/gravity correspondence in large-N orientifold field theory, are briefly discussed.Note:
- To be published in the Ian Kogan memorial collection 'From Fields to Strings: Circumnavigating Theoretical Physics', World Scientific, 2004 •
- 106 pages, LaTex. 15 figures. v2:minor changes, refs. added. To be published in the Ian Kogan Memorial Collection "From Fields to Strings: Circumnavigating Theoretical Physics," World Scientific, 2004
- gauge field theory: SU(N)
- supersymmetry: superfield
- supersymmetry: superspace
- expansion 1/N
- vacuum state
- orbifold
- orientifold
- Feynman graph: planar
- fermion: flavor
- energy
References(142)
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