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Constrained dynamics. Hamiltonian and Lagrangian quantization.
Quantum gauge fields. String field theory.
The main results:
BFV-formalism: Generalized canonical quantization of dynamical
systems with irreducible and reducible constraints. BV-formalism:
Lagrangian field-antifield quantization of dynamical systems with
irreducible and reducible gauge generators. Sp(2)-symmetric
counterparts to the BFV- and BV- formalisms. Triplectic quantization.
Current interests:
Unified constrained dynamics. General triplectic quantization.
Secondary--quantized string field theory.
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