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arXiv · 1612.08047

Open Effective Field Theories from Highly Inelastic Reactions

Eric Braaten·Hans-Werner Hammer·G. Peter Lepage
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Abstract

The loss of particles due to highly inelastic reactions has previously been taken into account in effective field theories for low-energy particles by adding local anti-Hermitian terms to the effective Hamiltonian. An additional modification is required in the time evolution equation for the density matrix of a multi-particle system. An effective density matrix can be defined by tracing over states containing high-momentum particles produced by the highly inelastic reactions and by a time average that eliminates short-time correlations. The effective density matrix satisfies the Lindblad equation, with local Lindblad operators that are determined by the anti-Hermitian terms in the effective Hamiltonian.

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Eric Braaten, Hans-Werner Hammer, G. Peter Lepage. 2016-12-23. Open Effective Field Theories from Highly Inelastic Reactions. https://arxiv.org/abs/1612.08047

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