Multiscalar production amplitudes beyond threshold
نویسندگان
چکیده
منابع مشابه
Multiscalar Production Amplitudes beyond Threshold
We present exact tree-order amplitudes for H → n H , for final states containing one or two particles with non-zero three-momentum, for various interaction potentials. We show that there are potentials leading to tree amplitudes that satisfy unitarity, not only at threshold but also in the above kinematical configurations and probably beyond. As a by-product, we also calculate 2 → n tree amplit...
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The Ward identities for amplitudes at the tree level are derived from symmetries of the corresponding classical dynamical systems. The result are aplied to some 2 → n amplitudes supported by the Lódź University grant No. 269. supported by KBN grant No. 5 P03B 060 21 1 I Introducion Threshold amplitudes provide one of the rare examples of problems in quantum field theory which are both interesti...
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Stability of the Haissinski solution is studied above the threshold of microwave instability. It is shown that instability may lead to a new self-consistent state corresponding to particles trapped in a separat rix of an unstable mode. The free energies of the two solutions are compared. The relaxation oscillations between the new and Haissinski solutions are possible and may be related to the ...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1993
ISSN: 0550-3213
DOI: 10.1016/0550-3213(93)90205-4