A glance beyond the quantum model

By Miguel Navascués, H. Wunderlich. Proceedings of the Royal Society A, 2009

267 citations recorded by the source corpus.

One of the most important problems in physics is to reconcile quantum mechanics with general relativity, and some authors have suggested that this may be realized at the expense of having to drop the quantum formalism in favour of a more general theory. Here, we propose a mechanism to make general claims on the microscopic structure of the Universe by postulating that any post-quantum theory should recover classical physics in the macroscopic limit. We use this mechanism to bound the strength of correlations between distant observers in any physical theory. Although several quantum limits are recovered, such as the set of two-point quantum correlators, our results suggest that there exist plausible microscopic theories of Nature that predict correlations impossible to reproduce in any quantum mechanical system.

Subfields: Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/bd0e663d9f545f6aa05add18773f5a0a3462b4b4

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atomic and Molecular Physics, and Optics

1. Ognyan Oreshkov
2. Fabio Costa
3. Č. Brukner
4. Christina Giarmatzi
5. Lucien Hardy

In Statistical and Nonlinear Physics

1. Ognyan Oreshkov
2. Fabio Costa
3. Č. Brukner
4. Christina Giarmatzi

Citations in the corpus

• Quantum correlations with no causal order (2011, methodology): “(16) The process observed by Bob is therefore described by the reduced matrix”