Abstract This paper investigates quantum obesity, quantum discord, and the quantum steering ellipsoid (QSE) for bipartite Gisin states that are subjected to Garfinkle–Horowitz–Strominger (GHS) dilation of spacetime on the second qubit. These three quantifiers are introduced to characterize quantum correlations beyond entanglement and can also function as entanglement witnesses. A monotonic decrease in the physical accessibility of both quantum discord as demonstrate in the results and quantum obesity as the dilation parameter increases within the region‐I of the second qubit. Conversely, in the anti‐particle region, the accessibility of quantum discord and quantum obesity stabilizes at finite values of the dilation parameter owing to the influence of the Pauli exclusion principle and Fermi‐Dirac statistics, subsequently increasing gradually. Notably, the QSE in the region‐I expand as the Dirac field frequency rises and the dilation parameter diminishes, while the opposite trend is observed in the anti‐particle region.
Elghaayda et al. (Thu,) studied this question.