Extended Objects in MQCD
نویسنده
چکیده
N = 1 supersymmetric QCD is considered using the recently proposed picture of it as the world volume theory of a single M-theory fivebrane with two of its dimensions wrapped on a Riemann surface. The conditions under which a second M-theory brane can be introduced preserving some supersymmetry are analysed. Such configurations represent BPS saturated extended objects in the quantum field theory on the brane worldvolume. Formulae for the tension of these extended objects are derived. An explicit intersecting fivebrane configuration is found which is interpreted as a BPS domain wall in 4-dimensional MQCD. On leave from the Institute of Theoretical Physics, Warsaw University, Poland.
منابع مشابه
A Note on (Meta)stable Brane Configurations in MQCD
We examine the M-theory version of SQCD which is known as MQCD. In the IIA limit, this theory appears to have a supersymmetry-breaking brane configuration which corresponds to the meta-stable state of N = 1 SU(Nc) SQCD. However, the behavior at infinity of this non-supersymmetric brane construction differs from that of the supersymmetric ground state of MQCD. We interpret this to mean that it i...
متن کاملComments on Duality in MQCD
We clarify some ambiguous points in a derivation of duality via brane exchange using M-theory language, and propose a “proof” of duality in MQCD. Actually, duality in MQCD is rather trivial and does not need a complicated proof. The problem is how to interpret it in field theory language. We examine BPS states in N = 2 theory and find the particle correspondence under duality. In the process, w...
متن کاملSoftly Broken MQCD and the Theta Angle
We consider a family of non-supersymmetric MQCD five-brane configurations introduced by Witten, and discuss the dependence of the curves on the microscopic theta angle and its relation with CP. We find evidence for a non-trivial spectral flow of the curves (vacua) and for the level-crossing of adjacent curves at a particular value of the theta angle, with spontaneous breaking of CP symmetry, pr...
متن کاملA Note on Softly Broken MQCD
We consider generic MQCD configurations with matter described by semiinfinte D4-branes and softly broken supersymmetry. We show that the matter sector does not introduce supersymmetry breaking parameters so that the most relevant supersymmetry breaking operator at low energies is the gaugino mass term. By studying the run-away properties of these models in the decoupling limit of the adjoint ma...
متن کاملOn Superpotential and BPS domain wall in SQCD and MQCD
We examine the decoupling properties of the N=2 SQCD vacua when the adjoint mass term is turned on and then the N=1 limit is taken. The BPS domain wall tension in N=1 MQCD and SQCD is also examined. The correspondence of the MQCD integrals with the superpotential and the gaugino condensate is shown. [email protected]
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1997