Speaker:
Dr
Leonardo Tinti
(Uniwersytet Jana Kochanowskiego w Kielcach)
Leonardo Tinti (UJK, Kielce)
Apparent teleportation of charms: what does it mean and how to measure it
Recent studies have proposed measuring the correlation in the momenta of pairs of charm and anti-charm mesons in heavy-ion collisions. The maximally thermalised position of the charms at the hadronisation hypersurface can be at odds with a speed bounded by the speed of light in the vacuum. Either there is a final momentum correlation, or there is apparent teleportation.
As it is usual in these cases, the apparent teleportation is not a causality violation. In fact, the faster speed is required only for a system of classical particles, not a more realistic medium.
We argue that in the strongly interacting system formed in heavy-ion collisions, we should not dismiss such apparent teleportation. The success of classical models in describing the fireball, such as the relativistic Boltzmann equation, can be traced to the similarity between the evolution of the distribution function and its quantum precursor in quantum field theory. Such success should not be taken as an indication that all properties derivable from a classical background must be enforced.