Quantum Discord and Steering in Top Quarks at the LHC.

Top quarks have been recently shown to be a promising system to study quantum information at the highest-energy scale available. The current lines of research mostly discuss topics such as entanglement, Bell nonlocality or quantum tomography. Here, we provide the full picture of quantum correlations in top quarks by studying also quantum discord and steering.

Observation of thermal Hawking radiation and its temperature in an analogue black hole.

The entropy of a black hole and Hawking radiation should have the same temperature given by the surface gravity, within a numerical factor of the order of unity. In addition, Hawking radiation should have a thermal spectrum, which creates an information paradox. However, the thermality should be limited by greybody factors, at the very least.