Entanglement saturation in quantum electrodynamics scattering processes

• URL: http://arxiv.org/abs/2505.06878v1
• Date: Sun, 11 May 2025 07:09:54 GMT
• Title: Entanglement saturation in quantum electrodynamics scattering processes
• Abstract summary: We investigate the properties of two-particle scattering processes when an arbitrarily sharp filtering of the outgoing particles in momentum space is performed.<n>We find that these processes are described by dynamical quantum maps, whose structure is such that any initial state is transformed into a maximally entangled state, after an infinite number of iterations of the map.<n>This structural property is exactly realized if all the colliding particles are massive fermions while, when photons are involved, it is verified in a partial way, depending on the process under consideration.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We investigate the properties of quantum electrodynamics (QED) two-particle scattering processes when an arbitrarily sharp filtering of the outgoing particles in momentum space is performed. We find that these processes are described by dynamical quantum maps, whose structure is such that any initial state is transformed into a maximally entangled state, after an infinite number of iterations of the map. This structural property is exactly realized if all the colliding particles are massive fermions while, when photons are involved, it is verified in a partial way, depending on the process under consideration.

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