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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 02360naa a2200349 4500 | |
| 001 | oai:DiVA.org:su-161072 | |
| 003 | SwePub | |
| 008 | 181101s2018 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1610722 URI |
| 024 | 7 | a https://doi.org/10.1007/JHEP09(2018)0932 DOI |
| 040 | a (SwePub)su | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Cotler, Jordan4 aut |
| 245 | 1 0 | a Superdensity operators for spacetime quantum mechanics |
| 264 | 1 | c 2018 |
| 338 | a print2 rdacarrier | |
| 520 | a We introduce superdensity operators as a tool for analyzing quantum information in spacetime. Superdensity operators encode spacetime correlation functions in an operator framework, and support a natural generalization of Hilbert space techniques and Dirac's transformation theory as traditionally applied to standard density operators. Superdensity operators can be measured experimentally, but accessing their full content requires novel procedures. We demonstrate these statements on several examples. The superdensity formalism suggests useful definitions of spacetime entropies and spacetime quantum channels. For example, we show that the von Neumann entropy of a superdensity operator is related to a quantum generalization of the Kolmogorov-Sinai entropy, and compute this for a many-body system. We also suggest experimental protocols for measuring spacetime entropies. | |
| 650 | 7 | a NATURVETENSKAPx Fysik0 (SwePub)1032 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciences0 (SwePub)1032 hsv//eng |
| 653 | a Space-Time Symmetries | |
| 653 | a Lattice Quantum Field Theory | |
| 700 | 1 | a Jian, Chao-Ming4 aut |
| 700 | 1 | a Qi, Xiao-Liang4 aut |
| 700 | 1 | a Wilczek, Franku Stockholms universitet,Oskar Klein-centrum för kosmopartikelfysik (OKC),MIT, USA; Shanghai Jiao Tong University, China; Arizona State University, USA4 aut0 (Swepub:su)wilczek |
| 710 | 2 | a Stockholms universitetb Oskar Klein-centrum för kosmopartikelfysik (OKC)4 org |
| 773 | 0 | t Journal of High Energy Physics (JHEP)g :9q :9x 1126-6708x 1029-8479 |
| 856 | 4 | u https://doi.org/10.1007/JHEP09(2018)093y Fulltext |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-161072 |
| 856 | 4 8 | u https://doi.org/10.1007/JHEP09(2018)093 |
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