Work

Theoretical limits on agegraphic quintessence from weak gravity conjecture

Year: 2010

Type: article

Abstract: In this Letter, we investigate the possible theoretical constraint on the parameter n of the agegraphic quintessence model by considering the requirement of the weak gravity conjecture that the variation of the quintessence scalar field ϕ should be less than the Planck mass M p . We obtain the theoretical upper bound n ≲ 2.5 that is inconsistent with the current observational constraint result 2.637 < n < 2.983 (95.4% CL). The possible implications of the tension between observational and theoretical constraint results are discussed.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2010.04.067

Authors: Xiang-Lai Liu, Jingfei Zhang, Xin Zhang

Institution: Northeastern University

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid:

Funder: National Natural Science Foundation of China