Maximal Entanglement in High Energy Physics

Cervera-Lierta, Alba; Latorre, José Ignacio; Rojo, Juan; Rottoli, Luca

doi:10.21468/SciPostPhys.3.5.036

SciPost Physics

Maximal Entanglement in High Energy Physics

Alba Cervera-Lierta, José I. Latorre, Juan Rojo, Luca Rottoli

SciPost Phys. 3, 036 (2017) · published 24 November 2017

doi: 10.21468/SciPostPhys.3.5.036
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Submissions/Reports

Abstract

We analyze how maximal entanglement is generated at the fundamental level in QED by studying correlations between helicity states in tree-level scattering processes at high energy. We demonstrate that two mechanisms for the generation of maximal entanglement are at work: i) $s$-channel processes where the virtual photon carries equal overlaps of the helicities of the final state particles, and ii) the indistinguishable superposition between $t$- and $u$-channels. We then study whether requiring maximal entanglement constrains the coupling structure of QED and the weak interactions. In the case of photon-electron interactions unconstrained by gauge symmetry, we show how this requirement allows reproducing QED. For $Z$-mediated weak scattering, the maximal entanglement principle leads to non-trivial predictions for the value of the weak mixing angle $\theta_W$. Our results are a first step towards understanding the connections between maximal entanglement and the fundamental symmetries of high-energy physics.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.3.5.036
TI  - Maximal Entanglement in High Energy Physics
PY  - 2017/11/24
UR  - https://www.scipost.org/SciPostPhys.3.5.036
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 3
IS  - 5
SP  - 036
A1  - Cervera-Lierta, Alba
AU  - Latorre, José Ignacio
AU  - Rojo, Juan
AU  - Rottoli, Luca
AB  - We analyze how maximal entanglement is generated at the fundamental level in QED by studying correlations between helicity states in tree-level scattering processes at high energy. We demonstrate that two mechanisms for the generation of maximal entanglement are at work: i) $s$-channel processes where the virtual photon carries equal overlaps of the helicities of the final state particles, and ii) the indistinguishable superposition between $t$- and $u$-channels. We then study whether requiring maximal entanglement constrains the coupling structure of QED and the weak interactions. In the case of photon-electron interactions unconstrained by gauge symmetry, we show how this requirement allows reproducing QED. For $Z$-mediated weak scattering, the maximal entanglement principle leads to non-trivial predictions for the value of the weak mixing angle $\theta_W$. Our results are a first step towards understanding the connections between maximal entanglement and the fundamental symmetries of high-energy physics.
ER  -

@Article{10.21468/SciPostPhys.3.5.036,
	title={{Maximal Entanglement in High Energy Physics}},
	author={Alba Cervera-Lierta and José I. Latorre and Juan Rojo and Luca Rottoli},
	journal={SciPost Phys.},
	volume={3},
	pages={036},
	year={2017},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.3.5.036},
	url={https://scipost.org/10.21468/SciPostPhys.3.5.036},
}

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Ontology / Topics

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Entanglement Gauge symmetry Mixing angle Quantum electrodynamics (QED) Tree-level scattering processes Weak interactions

Authors / Affiliations: mappings to Contributors and Organizations

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¹ Alba Cervera-Lierta,
¹ ² José Ignacio Latorre,
³ ⁴ Juan Rojo,
⁵ Luca Rottoli

Funders for the research work leading to this publication

European Research Council [ERC]
Ministerio de Economía y Competitividad (MINECO) (through Organization: Ministerio de Economía, Industria y Competitividad / Ministry of Economy, Industry and Competitiveness [MINECO])