The conditions for quantum violation of macroscopic realism
| dc.creator | Kofler, Johannes | |
| dc.creator | Brukner, Caslav | |
| dc.date | 2007-06-05 | |
| dc.date | 2008-08-28 | |
| dc.date.accessioned | 2026-07-07T09:58:33Z | |
| dc.date.available | 2026-07-07T09:58:33Z | |
| dc.description | Why do we not experience a violation of macroscopic realism in every-day life? Normally, no violation can be seen either because of decoherence or the restriction of coarse-grained measurements, transforming the time evolution of any quantum state into a classical time evolution of a statistical mixture. We find the sufficient condition for these classical evolutions for spin systems under coarse-grained measurements. Then we demonstrate that there exist "non-classical" Hamiltonians whose time evolution cannot be understood classically, although at every instant of time the quantum spin state appears as a classical mixture. We suggest that such Hamiltonians are unlikely to be realized in nature because of their high computational complexity. | |
| dc.description | 4 pages, 2 figures, revised version, journal reference added | |
| dc.identifier | https://arxiv.org/abs/0706.0668 | |
| dc.identifier | http://arxiv.org/abs/0706.0668 | |
| dc.identifier | Phys. Rev. Lett. 101, 090403 (2008) | |
| dc.identifier | doi:10.1103/PhysRevLett.101.090403 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/167754 | |
| dc.subject | Quantum Physics | |
| dc.title | The conditions for quantum violation of macroscopic realism | |
| dc.type | text |