QG2 - Quantum Gravity Phenomenology |
|
Speaker |
Giacomini, Flaminia |
|
Coauthors |
Giacomini, Flaminia; Castro-Ruiz, Esteban; Brukner, Caslav |
| Talk Title |
Infinite-dimensional quantum systems on indefinite causal structures |
|
Abstract |
Standard quantum mechanics assumes that events are embedded in a global causal structure. The process matrix framework keeps the local validity of standard quantum mechanics while relaxing the assumption on the global causal structure. This leads to multipartite correlations which lie outside the usual causally ordered framework, and opens interesting perspectives on our understanding of the nature of space and time. So far, the formalism has been developed only for finite-dimensional systems. Here we address the generalization to infinite-dimensional Hilbert spaces, with the long-term goal of formulating quantum fields on indefinite causal structure. Moreover, we discuss a system in which the causal order is not definite: the quantum switch. |
|
Talk view |
|
|
|
|