منابع مشابه
Generalized Stochastic Gauge Fixing
We propose a generalization of the stochastic gauge fixing procedure for the stochastic quantization of gauge theories where not only the drift term of the stochastic process is changed but also the Wiener process itself. All gauge invariant expectation values remain unchanged. As an explicit example we study the case of an abelian gauge field coupled with three bosonic matter fields in 0+1 dim...
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After an introduction in which we review the fundamental difficulty in constructing lattice chiral gauge theories, we discuss the analytic and numerical evidence that abelian lattice chiral gauge theories can be non-perturbatively constructed through the gauge-fixing approach. While a complete non-abelian extension is still under construction, we also show how fermion-number violating processes...
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Nonsingularity conditions are established for the BFV gauge-fixing fermion which are sufficient for it to lead to the correct path integral for a theory with constraints canonically quantized in the BFV approach. The conditions ensure that anticommutator of this fermion with the BRST charge regularises the path integral by regularising the trace over non-physical states in each ghost sector. Th...
متن کاملRemarks on Lattice Gauge Fixing
In the lattice gauge theories where the links belong to a compact group, the gauge fixing is necessary only in the case of the measure of a gauge dependent operator. An expression similar to (1) but without having gauge fixed the links, defines the expectation value of a gauge independent operator. Moreover, in a lattice simulation there is no need to compute the Faddeev-Popov determinant becau...
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The gauge field theories are usually quantized by fixing gauge. In this paper, we propose a new formalism that quantizes gauge fields without gauge fixing but naturally follows canonical formalism. New physical implications will follow. Gauge symmetry is often indispensable because relativistic system usually need gauge symmetry. If it were not for gauge symmetry for a vector or tensor field, w...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1998
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(97)00916-x