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 to reproduce 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.

Cervera-Lierta, A., Latorre, J., Rojo, J., & Rottoli, L. (2017). Maximal Entanglement in High Energy Physics. SCIPOST PHYSICS, 3(5) [10.21468/SciPostPhys.3.5.036].

Maximal Entanglement in High Energy Physics

Rottoli, L
2017

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 to reproduce 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.
Articolo in rivista - Articolo scientifico
Scientifica
Entanglement
English
Cervera-Lierta, A., Latorre, J., Rojo, J., & Rottoli, L. (2017). Maximal Entanglement in High Energy Physics. SCIPOST PHYSICS, 3(5) [10.21468/SciPostPhys.3.5.036].
Cervera-Lierta, A; Latorre, J; Rojo, J; Rottoli, L
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/229871
Citazioni
  • Scopus 16
  • ???jsp.display-item.citation.isi??? 15
Social impact