Quantum Fields and the Cosmological Constant

Ferrero R, Naso V, Percacci R (2025)


Publication Type: Journal article

Publication year: 2025

Journal

Book Volume: 11

Article Number: 173

Journal Issue: 6

DOI: 10.3390/universe11060173

Abstract

It has been shown that if one solves self-consistently the semiclassical Einstein equations in the presence of a quantum scalar field, with a cutoff on the number of modes, spacetime become flatter when the cutoff increases. Here, we extend the result to include the effect of fields with spin 0, 1/2, 1 and 2. With minor adjustments, the main result persists. Remarkably, one can have positive curvature even if the cosmological constant in the bare action is negative.

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How to cite

APA:

Ferrero, R., Naso, V., & Percacci, R. (2025). Quantum Fields and the Cosmological Constant. Universe, 11(6). https://doi.org/10.3390/universe11060173

MLA:

Ferrero, Renata, Vincenzo Naso, and Roberto Percacci. "Quantum Fields and the Cosmological Constant." Universe 11.6 (2025).

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