Trudy Mat. Inst. Steklov., 1975, Volume 135, Pages 198–200
$T$-products in Bogolubov's axiomatics
B. V. Medvedev, A. D. Sukhanov
The obvious phenomenon in the classical mechanics, namely the distinction between Hamiltonian $H$ and (minus) Lagrangian $-L$, is described in quantum field theory by two distinct $T$-products. This distinction is reflected in two forms of $S$-matrix – the chronological exponentials, $T_D$ with $H$ and $T_W$ with $-L$ as generators, proposed by second author in 1961. The causal and unitary $S$-matrix requires resp. non-local and non-hermitian Lagrangian in the general type of régularisation. The distinction between $T_D$ and $T_W$, is also clearly seen in Green functions. The field Green functions depend on T-products only of the fields themselves when the classical examples of renormalisable theories are concerned. Generally the renormalisation of Green functions requires taking into consideration the higher field-like quasilocal operators.
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B. V. Medvedev, A. D. Sukhanov, “$T$-products in Bogolubov's axiomatics”, International Conference on Mathematical Problems of Quantum Field Theory and Quantum Statistics. Part I. Axiomatic quantum field theory, Collection of talks (Moscow, 12–17 December, 1972), Trudy Mat. Inst. Steklov., 135, 1975, 198–200
Citation in format AMSBIB
\by B.~V.~Medvedev, A.~D.~Sukhanov
\paper $T$-products in Bogolubov's axiomatics
\inbook International Conference on Mathematical Problems of Quantum Field Theory and Quantum Statistics. Part~I. Axiomatic quantum field theory
\bookinfo Collection of talks
\procinfo Moscow, 12--17 December, 1972
\serial Trudy Mat. Inst. Steklov.
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