Naslov
If time is a local observable, then Hawking radiation is unitary

Autori
Nikolić, Hrvoje

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Skup
Quantum 2014: Advances in Foundations of Quantum Mechanics and Quantum Information with Atoms and Photons

Mjesto i datum
Torino, Italija, 25.05.2014. - 31.05.2014

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
time; local observable; unitarity; Hawking radiation

Sažetak
In the usual formulation of quantum theory, time is a global classical evolution parameter, not a local quantum observable. On the other hand, both canonical quantum gravity (which lacks fundamental time-evolution parameter) and the principle of spacetime covariance (which insists that time should be treated on an equal footing with space) suggest that quantum theory should be slightly reformulated, in a manner that promotes time to a local observable. Such a reformulated quantum theory is unitary in a more general sense than the usual quantum theory. In particular, this promotes the non-unitary Hawking radiation to a unitary phenomenon, which avoids the black-hole information paradox.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
Published as Special Issue of Int. J. Quant. Inf. 12, 1560001 (2014)

POVEZANOST RADA