175 research outputs found
On the equivalence between the unified and standard versions of constraint dynamics
The structure of physical operators and states of the unified constraint
dynamics is studied. The genuine second--class constraints encoded are shown to
be the superselection operators. The unified constrained dynamics is
established to be physically--equivalent to the standard BFV--formalism with
constraints split.Comment: 10 pages, FIAN/TD/12--9
On the Equivalence of Dual Theories
We discuss the equivalence of two dual scalar field theories in 2 dimensions.
The models are derived though the elimination of different fields in the same
Freedman--Townsend model. It is shown that tree -matrices of these models do
not coincide. The 2-loop counterterms are calculated. It turns out that while
one of these models is single-charged, the other theory is multi-charged. Thus
the dual models considered are non-equivalent on classical and quantum levels.
It indicates the possibility of the anomaly leading to non-equivalence of dual
models.Comment: 14 pages, LaTeX; 2 figures, encapsulated PostScrip
On the Perturbative Equivalence Between the Hamiltonian and Lagrangian Quantizations
The Hamiltonian (BFV) and Lagrangian (BV) quantization schemes are proved to
be equivalent perturbatively to each other. It is shown in particular that the
quantum master equation being treated perturbatively possesses a local formal
solution.Comment: 14 pages, LaTeX, no figure
On the Multilevel Field--Antifield Formalism with the Most General Lagrangian Hypergauges
The multilevel field-antifield formalism is constructed in a geometrically
covariant way without imposing the unimodularity conditions on the hypergauge
functions. Thus the previously given version [1,2] is extended to cover the
most general case of Lagrangian surface bases. It is shown that the extra
measure factors, required to enter the gauge-independent functional integrals,
can be included naturally into the multilevel scheme by modifying the boundary
conditions to the quantum master equation.Comment: 9, P.N.Lebedev Physical Institute, I.E.Tamm Theory Departmen
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