Comments on Duality in MQCD | Zendy

Shigeki Sugimoto | Zendy

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Comments on Duality in MQCD

Author(s) -

Shigeki Sugimoto

Publication year - 1998

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.100.123

Subject(s) - duality (order theory) , physics , string (physics) , theoretical physics , t duality , string theory , strong duality , field theory (psychology) , brane , string duality , relationship between string theory and quantum field theory , mathematical physics , pure mathematics , quantum mechanics , mathematics , optimization problem , quantum gravity , quantum , mathematical optimization

We clarify some ambiguous points in a derivation of duality via braneexchange using M-theory language, and propose a ``proof'' of duality in MQCD.Actually, duality in MQCD is rather trivial and does not need a complicatedproof. The problem is how to interpret it in field theory language. We examine BPSstates in N=2 theory and find the particle correspondence under duality. In theprocess, we also find some exotic particles in N=2 MQCD, and we observe aninteresting phenomenon in type IIA string theory, namely, that fundamentalstrings are converted into D2-branes via the exchange of two NS5-branes. Wealso discuss how we should understand Seiberg's N=1 duality from exact dualityin MQCD.Comment: 29 pages + 20 uuencoded eps figures, LaTeX with PTPTeXsty, typo corrected, version to appear in Prog. Theor. Phy

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