Środowiskowe Seminarium z Informacji i Technologii Kwantowych

It is well known that deviation from conformal invariance is associated with particles creation from vacuum in an expanding universe. It can be achieved if the field is massive or non-conformally coupled or the space-time is anisotropic. Here, we study entanglement associated to the created particles, through Von Neumann entropy, and compare the three different contributions for a scalar field in an homogeneous universe. Furthemore, we directly relate cosmological parameters to entanglement.