Superluminal hidden communication as the underlying mechanism for quantum correlations: Constraining models
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| Format: | Artículo científico |
| Language: | en |
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Sociedade Brasileira de Física
2005
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| author | Valerio Scarani |
| author_facet | Valerio Scarani |
| contents | Superluminal hidden communication as the underlying mechanism for quantum correlations: Constraining models Valerio Scarani Nicolas Gisin Física, Astronomía y Matemáticas Since Bells theorem, it is known that quantum correlations cannot be described by local variables (LV) alone:if one does not want to abandon classical mechanisms for correlations, a superluminal form of communicationamong the particles must be postulated. A natural question is whether such a postulate would imply the possibilityof superluminal signaling. Here we show that the assumption of finite-speed superluminal communicationindeed leads to signaling when no LV are present, and more generally when only LV derivable from quantumstatistics are allowed. When the most general LV are allowed, we prove in a specific case that the model can bemade again consistent with relativity, but the question remains open in general. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435218 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2A Vol.35 |
| format | Artículo científico |
| id | redalyc_46435218 |
| institution | Redalyc |
| language | en |
| publishDate | 2005 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Superluminal hidden communication as the underlying mechanism for quantum correlations: Constraining models Valerio Scarani Física, Astronomía y Matemáticas Superluminal hidden communication as the underlying mechanism for quantum correlations: Constraining models Valerio Scarani Nicolas Gisin Física, Astronomía y Matemáticas Since Bells theorem, it is known that quantum correlations cannot be described by local variables (LV) alone:if one does not want to abandon classical mechanisms for correlations, a superluminal form of communicationamong the particles must be postulated. A natural question is whether such a postulate would imply the possibilityof superluminal signaling. Here we show that the assumption of finite-speed superluminal communicationindeed leads to signaling when no LV are present, and more generally when only LV derivable from quantumstatistics are allowed. When the most general LV are allowed, we prove in a specific case that the model can bemade again consistent with relativity, but the question remains open in general. 2005 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46435218 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2A Vol.35 |
| title | Superluminal hidden communication as the underlying mechanism for quantum correlations: Constraining models |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46435218 |