• Corpus ID: 250492796

Radiative stability of tiny cosmological constant from the Swampland and quantized compactification

@inproceedings{Nam2022RadiativeSO,
  title={Radiative stability of tiny cosmological constant from the Swampland and quantized compactification},
  author={Cao H Nam},
  year={2022}
}

• C. H. Nam
• Published 13 July 2022
• Physics

We address a quantization mechanism that allows us to understand why the cosmological constant is not large under the quantum corrections from studying the circle compactification solution of the Standard Model coupled to Einstein gravity which is subject to the constraint of the Swampland conjectures. A novel result in the present work compared to the previous investigations in this direction in the literature is that the radius of the compactified dimension must in fact be quantized. From this result together with the investigation of the 3D vacuum by exploring the 3D radion potential, we find a quantization rule of the cosmological constant Λ 4 as Λ 4 ∝ n 2 with n = 1 , 2 , 3 , 4 , · · · , which means that the values of Λ 4 are not arbitrary but only its specific values are allowed. In general, the quantum corrections as well as other effects would break this quantization rule. Hence, it prevents the quantum fluctuations from generating zero-point energy contributions to the cosmological constant.