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Sp(N_c) Gauge Theories and M Theory Fivebrane | | Changhyun Ahn
; Kyungho Oh
; Radu Tatar
; | | Date: |
25 Aug 1997 | | Journal: | Phys.Rev. D58 (1998) 086002 | | Subject: | hep-th | | Abstract: | We analyze M theory fivebrane in order to study the moduli space of vacua of N=1 supersymmetric $Sp(N_c)$ gauge theories with $N_f$ flavors in four dimensions. We show how the N=2 Higgs branch can be encoded in M theory by studying the orientifold which plays a crucial role in our work. When all the quark masses are the same, the surface of the M theory spacetime representing a nontrivial ${f S^1}$ bundle over ${f R^3}$ develops $A_{N_f-1}$ type singularities at two points where D6 branes are located. Furthermore, by turning off the masses, two singular points on the surface collide and produce $A_{2N_f-1}$ type singularity. The sum of the multiplicities of rational curves on the resolved surface gives the dimension of N=2 Higgs branch which agrees with the counting from the brane configuration picture of type IIA string theory. By rotating M theory fivebranes we get the strongly coupled dynamics of N=1 theory and describe the vacuum expectation values of the meson field parameterizing Higgs branch which are in complete agreement with the field theory results. Finally, we take the limit where the mass of adjoint chiral multiplet goes to infinity and compare with field theory results. For massive case, we comment on some relations with recent work which deals with N=1 duality in the context of M theory. | | Source: | arXiv, hep-th/9708127 | | Services: | Forum | Review | PDF | Favorites | |
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