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The fate of a universe driven by a linear potential

R. Zambujal Ferreira, P. P. Avelino

Abstract
We study the proposal to solve the coincidence problem in the non-local version of the vacuum energy sequestering mechanism by means of a scalar field in a linear potential. We show that there is no solution in the theory compatible with observations if one requires the scalar field to drive the present period of acceleration and the collapse.

Keywords
dark energy; cosmological constant; vacuum energy sequestering mechanism

Classical and Quantum Gravity
Volume 35, Number 17, Page 4
2018 August

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Instituto de Astrofísica e Ciências do Espaço Universidade do Porto Faculdade de Ciências da Universidade de Lisboa
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia