Indirect detection of Cosmological Constant from interacting open quantum system

We study the indirect detection of Cosmological Constant from an open quantum system of interacting spins, weakly interacting with a thermal bath, a massless scalar field minimally coupled with the static de Sitter background, by computing the spectroscopic shifts. By assuming pairwise interaction between spins, we construct states using a generalization of the superposition principle. The corresponding spectroscopic shifts, caused by the effective Hamiltonian of the system due to Casimir Polder interaction, are seen to play a crucial role in predicting a very tiny value of the Cosmological Constant, in the static patch of de Sitter space, which is consistent with the observed value from the Planck measurements of the cosmic microwave background (CMB) anisotropies.(c) 2022 Elsevier Inc. All rights reserved.

Automated summary

The study focuses on the indirect detection of the Cosmological Constant using spectroscopic shifts in an open quantum system of weakly interacting spins in the de Sitter background. The results show that the spectroscopic shifts, caused by the Casimir Polder interaction, play a crucial role in predicting a very tiny value of the Cosmological Constant in the static patch of de Sitter space, consistent with the observed value from the Planck measurements of the cosmic microwave background (CMB) anisotropies.