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Free keywords:
High Energy Physics - Theory, hep-th, Condensed Matter, Statistical Mechanics, cond-mat.stat-mech,General Relativity and Quantum Cosmology, gr-qc,High Energy Physics - Phenomenology, hep-ph,Quantum Physics, quant-ph
Abstract:
In this letter, we study the indirect detection of {\it Cosmological
Constant} from an {\it open quantum system} of $N$ entangled 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 entanglement between spins, we construct entangled $N$ states
using a generalisation of the superposition principle. We have found that in
the realistic large $N$ limit, where the system consists of $N\sim{\cal
O}(10^3-10^4)$ spins, the corresponding spectroscopic shifts, caused by the
effective Hamiltonian of the system due to Casimir Polder interaction with the
bath, play a crucial role to determine the observationally consistent
Cosmological Constant, $\Lambda\sim {\cal O}(10^{-122})$ (Planckian units) in
the static patch of De Sitter space.
