Decoherence effects in entangled fermion pairs at colliders
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arXiv
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| Auteurs principaux: | , , , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866916000451002368 |
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| author | Aoude, Rafael Barr, Alan J. Maltoni, Fabio Satrioni, Leonardo |
| author_facet | Aoude, Rafael Barr, Alan J. Maltoni, Fabio Satrioni, Leonardo |
| contents | Recent measurements at the Large Hadron Collider have observed entanglement in the spins of $t\bar t$ pairs. The effects of radiation, which are expected to lead to quantum decoherence and a reduction of entanglement, are generally neglected in such measurements. In this work we calculate the effects of decoherence from various different types of radiation for a maximally entangled pair of fermions -- a bipartite system of qubits in a Bell state. We identify the Kraus operators describing the evolution of the open quantum system with the integrated Altarelli-Parisi splitting functions. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_07030 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Decoherence effects in entangled fermion pairs at colliders Aoude, Rafael Barr, Alan J. Maltoni, Fabio Satrioni, Leonardo Quantum Physics High Energy Physics - Experiment High Energy Physics - Phenomenology Recent measurements at the Large Hadron Collider have observed entanglement in the spins of $t\bar t$ pairs. The effects of radiation, which are expected to lead to quantum decoherence and a reduction of entanglement, are generally neglected in such measurements. In this work we calculate the effects of decoherence from various different types of radiation for a maximally entangled pair of fermions -- a bipartite system of qubits in a Bell state. We identify the Kraus operators describing the evolution of the open quantum system with the integrated Altarelli-Parisi splitting functions. |
| title | Decoherence effects in entangled fermion pairs at colliders |
| topic | Quantum Physics High Energy Physics - Experiment High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2504.07030 |