Entanglement in Quantum Field Theory

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In quantum theory, there can exist correlations between subsystems of a new kind that are
absent in classical systems. These correlations are normally called "entanglement".
Originally, it was felt by Einstein, Podolski, Rosen, and others, that entanglement was
somehow an argument against quantum theory. But nowadays the situation is reversed in
that one tends to think of it as a practically useful resource enabling one to perform
tasks that would be impossible classically. In quantum field theory, the notion of a
subsystem is aways tied to localization in space(time). It is a surprising fact that in
this situation, essentially all states usually considered are maximally entangled!
In this colloquium, I will explain in more detail the notion of entanglement and its role
in quantum field theory, including versions of such theories on black hole spacetimes,
where entanglement considerations are particularly fundamental and natural.
[Based on joint work with Jacobus Sanders.]*

Donnerstag, den 4. Mai 2017 um 17.15 Uhr, in Mathematikon, INF 205, Hörsaal Mathematikon Donnerstag, den 4. Mai 2017 at 17.15, in Mathematikon, INF 205, Hörsaal Mathematikon

Der Vortrag folgt der Einladung von The lecture takes place at invitation by Prof. M. Salmhofer