Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1998-10-21
Found.Phys. 30 (2000) 475-486
Physics
High Energy Physics
High Energy Physics - Theory
11 pages, Latex
Scientific paper
The Discrete Light-Cone Quantization (DLCQ) of a supersymmetric gauge theory in 1+1 dimensions is discussed, with particular attention given to the inclusion of the gauge zero mode. Interestingly, the notorious `zero-mode' problem is now tractable because of special supersymmetric cancellations. In particular, we show that anomalous zero-mode contributions to the currents are absent, in contrast to what is observed in the non-supersymmetric case. An analysis of the vacuum structure is provided by deriving the effective quantum mechanical Hamiltonian of the gauge zero mode. It is shown that the inclusion of the zero modes of the adjoint scalars and fermions is crucial for probing the phase properties of the vacua. We find that the ground state energy is zero and thus consistent with unbroken supersymmetry, and conclude that the light-cone Fock vacuum is unchanged with or without the presence of matter fields.
Antonuccio Francesco
Pinsky Stephen
TSUJIMARU Sho
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