Strong coupling in the quantum field theory with nonlocal nonpolynomial interaction |
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Authors: | G V Efimov |
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Institution: | (1) Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, USSR |
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Abstract: | In the relativistic quantum field theory the representation for theS-matrix elements is obtained for any coupling constantsg in the case of a one component scalar field (x) with nonlocal nonpolynomial interaction
I
( )=gU( ) when the causal function is bounded in the Euclidean region 0 D
c
(x
E
2
D
c
(0)< and the function |U(u)| 1 for realu. It is proved that the two point Green function is bounded in the physical region of momenta variablep
2. |
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Keywords: | |
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