Observational analysis shows a vanishing cosmological constant in effective field theory, indicating a unique relation to vacuum energy.
It is shown to all orders of perturbation theory that in the effective field theory of general relativity the condition of vanishing of the vacuum energy leads to the same value of the cosmological constant viewed as a parameter of the effective Lagrangian, as obtained by demanding the consistency of the effective field theory in the Minkowski background. The resulting effective action is characterized by the cosmological constant term that vanishes exactly.
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Epelbaum et al. (2025) studied this question.
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