O(4) symmetric singular solutions and multiparticle cross sections in ${\varphi }^4$ theory at tree level

Abstract

We solve the classical euclidean boundary value problem for tree-level multiparticle production in ${\varphi }^4$ theory at arbitrary energies in the case of $O(4)$ symmetric field configurations. We reproduce known low-energy results and obtain a lower bound on the tree cross sections at arbitrary energies.

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References in corpus (2)

• Exponentiation of Multiparticle Amplitudes in Scalar Theories
• Exponentiation of multiparticle amplitudes in scalar theories. II. Universality of the exponent

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