We study aspects of confinement in the M theory fivebrane version of QCD (MQCD). We show heavy quarks are confined in hadrons (which take the form of membrane-fivebrane bound states) for N=1 and softly broken N=2 SU(Nc) MQCD. We explore and clarify the transition from the exotic physics of the latter to the standard physics of the former. In particular, the many strings and quark-antiquark mesons found in N=2 field theory by Douglas and Shenker are reproduced. It is seen that in the N=1 limit all but one such meson disappears while all of the strings survive. The strings of softly broken N=2, N=1, and even non-supersymmetric SU(Nc) MQCD have a common ratio for their tensions as a function of the amount of flux they carry. We also comment on the almost BPS properties of the Douglas-Shenker strings and discuss the brane picture for monopole confinement on N=2 QCD Higgs branches

Hanany, A., Strassler, M., Zaffaroni, A. (1998). Confinement and Strings in MQCD. NUCLEAR PHYSICS. B, 513(1-2), 87-118 [10.1016/S0550-3213(97)00651-2].

Confinement and Strings in MQCD

Zaffaroni, A.
1998

Abstract

We study aspects of confinement in the M theory fivebrane version of QCD (MQCD). We show heavy quarks are confined in hadrons (which take the form of membrane-fivebrane bound states) for N=1 and softly broken N=2 SU(Nc) MQCD. We explore and clarify the transition from the exotic physics of the latter to the standard physics of the former. In particular, the many strings and quark-antiquark mesons found in N=2 field theory by Douglas and Shenker are reproduced. It is seen that in the N=1 limit all but one such meson disappears while all of the strings survive. The strings of softly broken N=2, N=1, and even non-supersymmetric SU(Nc) MQCD have a common ratio for their tensions as a function of the amount of flux they carry. We also comment on the almost BPS properties of the Douglas-Shenker strings and discuss the brane picture for monopole confinement on N=2 QCD Higgs branches
Articolo in rivista - Articolo scientifico
D-branes; gauge theories
English
1998
513
1-2
87
118
none
Hanany, A., Strassler, M., Zaffaroni, A. (1998). Confinement and Strings in MQCD. NUCLEAR PHYSICS. B, 513(1-2), 87-118 [10.1016/S0550-3213(97)00651-2].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/1141
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