BPU 12 Congress

Werner states in non inertial frames

9 Jul 2025, 16:40

10m

Politechnica Univ

Oral Presentations S10 – Quantum Physics, Information and Communication Quantum Physics, Information and Communication

Speaker

Madalin Calamanciuc (National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania, Faculty of Physics, University of Bucharest, Romania)

Description

We investigated the separability of a general Werner state in the framework of non-inertial frames
of references. We considered bimodal and trimodal quantum systems described by modes of different
field theories. Our analysis include the study of a free scalar quantum field for describing bosons and
a free Dirac field associated with the description of Fermions. We provided condition of separability
for both bosons and Fermions in bipartite and tripartite systems, showing that the separability of a
general Werner state is regulated by the acceleration parameters in both cases. We shown that for
bosons and Fermions the acceleration parameter decreases the logarithmic negativity between the
modes having two distinct behaviours. Bosons are supposed to undergo the entanglement sudden
death phenomena as the acceleration parameter grows, Fermions decrease but remain entangled
even in the limit of infinite acceleration. We provided graphical representation of the separability
conditions for both Fermionic and bosonic modes and we compute the purity of both cases.