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تسجيل مستخدم جديدUltraviolet to Infrared Evolution and Nonperturbative Behavior of ${rm SU}(N) otimes {rm SU}(N-4) otimes {rm U}(1)$ Chiral Gauge Theories
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We analyze the ultraviolet to infrared evolution and nonperturbative properties of asymptotically free ${rm SU}(N) otimes {rm SU}(N-4) otimes {rm U}(1)$ chiral gauge theories with $N_f$ copies of chiral fermions transforming according to $([2]_N,1)_{N-4} + ([bar 1]_N,[bar 1]_{N-4})_{-(N-2)} + (1,(2)_{N-4})_N$, where $[k]_N$ and $(k)_N$ denote the antisymmetric and symmetric rank-$k$ tensor representations of SU($N$) and the rightmost subscript is the U(1) charge. We give a detailed discussion for the lowest nondegenerate case, $N=6$. These theories can exhibit both self-breaking of a strongly coupled gauge symmetry and induced dynamical breaking of a weakly coupled gauge interaction symmetry due to fermion condensates produced by a strongly coupled gauge interaction. A connection with the dynamical breaking of ${rm SU}(2)_L otimes {rm U}(1)_Y$ electroweak gauge symmetry by the quark condensates $langle bar q qrangle$ due to color SU(3)$_c$ interactions is discussed. We also remark on direct-product chiral gauge theories with fermions in higher-rank tensor representations.
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