Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Cosmological Constant as a Finite Temperature Effect

Version 1 : Received: 4 January 2021 / Approved: 5 January 2021 / Online: 5 January 2021 (15:14:28 CET)
Version 2 : Received: 7 January 2021 / Approved: 8 January 2021 / Online: 8 January 2021 (14:26:20 CET)

How to cite: park, I. Cosmological Constant as a Finite Temperature Effect. Preprints 2021, 2021010100. park, I. Cosmological Constant as a Finite Temperature Effect. Preprints 2021, 2021010100.


The cosmological constant problem is examined by taking an Einstein--scalar with a Higgs-type potential and scrutinizing the infrared structure induced by finite temperature effects. A variant optimal perturbation theory is implemented in the recently proposed quantum-gravitational framework. The optimized renormalized mass, i.e., the renormalized mass determined by the variant optimal perturbation theory, of the scalar field turns out to be on the order of the temperature. This shifts the cosmological constant problem to compatibility of the consequent perturbative analysis. The compatibility is guaranteed essentially by renormalization group invariance of physical quantities. We point out the resummation behind the invariance.


cosmological constant; finite temperature; quantum gravity


Physical Sciences, Quantum Science and Technology

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