Quantifying causal influences in the presence of a quantum common cause
| dc.contributor.author | Araújo, Rafael Chaves Souto | |
| dc.contributor.author | Miklin, Nikolai | |
| dc.contributor.author | Gachechiladze, Mariami | |
| dc.date.accessioned | 2025-06-09T19:38:49Z | |
| dc.date.available | 2025-06-09T19:38:49Z | |
| dc.date.issued | 2020-12-02 | |
| dc.description.resumo | Quantum mechanics challenges our intuition on the cause-effect relations in nature. Some fundamental concepts, including Reichenbach’s common cause principle or the notion of local realism, have to be reconsidered. Traditionally, this is witnessed by the violation of a Bell inequality. But are Bell inequalities the only signature of the incompatibility between quantum correlations and causality theory? Motivated by this question, we introduce a general framework able to estimate causal influences between two variables, without the need of interventions and irrespectively of the classical, quantum, or even postquantum nature of a common cause. In particular, by considering the simplest instrumental scenario—for which violation of Bell inequalities is not possible—we show that every pure bipartite entangled state violates the classical bounds on causal influence, thus, answering in negative to the posed question and opening a new venue to explore the role of causality within quantum theory | |
| dc.identifier.citation | ARAÚJO, Rafael Chaves Souto; GACHECHILADZE, Mariami; MIKLIN, Nikolai. Quantifying causal influences in the presence of a quantum common cause. Physical Review Letters, v. 125, p. 230401, 2020. DOI 10.1103/PhysRevLett.125.230401. Disponível em: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.125.230401. Acesso em: 19 mar. 2025. | |
| dc.identifier.doi | https://doi.org/10.1103/PhysRevLett.125.230401 | |
| dc.identifier.issn | 1079-7114 | |
| dc.identifier.other | DOI 10.1103/PhysRevLett.125.230401 | |
| dc.identifier.uri | https://repositorio.ufrn.br/handle/123456789/63877 | |
| dc.language | en | pt_BR |
| dc.language.iso | en_US | |
| dc.publisher | Physical Review Letters | pt_BR |
| dc.subject | Nonlocality | pt_BR |
| dc.subject | Não localidade | pt_BR |
| dc.subject | Quantum correlations in quantum information | pt_BR |
| dc.subject | Correlações quânticas em informação quântica | pt_BR |
| dc.subject | Quantum foundations | pt_BR |
| dc.subject | Fundações quânticas | pt_BR |
| dc.subject | Quantum networks | pt_BR |
| dc.subject | Redes quânticas | pt_BR |
| dc.title | Quantifying causal influences in the presence of a quantum common cause | |
| dc.type | article | pt_BR |
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