Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-04-06
Nucl.Phys. B506 (1997) 157-182
Physics
High Energy Physics
High Energy Physics - Theory
32 pages, 9 figures, uses harvmac, tables, and epsf
Scientific paper
10.1016/S0550-3213(97)00482-3
We study N=1 four dimensional gauge theories as the world volume theory of D4-branes between NS 5-branes. We find constructions for a number of known field theory dualities involving $SU(N_c)\times SU(N_c')$ groups, coupled by matter fields F in the $(N_c, \bar N_c)$ representation, in terms of branes of type IIA string theory. The dual gauge group follows from simply reversing the ordering of the NS 5-branes and the D6-branes while conserving magnetic charge on the world volume of the branes. We interpret many field theory phenomena such as deformation of the superpotential $W = \Tr (F\tilde F)^{k+1}$ in terms of the position of branes. By looking to D-branes for guidance, we find new N=1 dualities involving arbitrary numbers of gauge groups. We propose a mechanism for enhanced chiral symmetry in the brane construction which, we conjecture, is associated with tensionless threebranes in six dimensions.
Brodie John H.
Hanany Amihay
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