Problems of vacuum energy and dark energy

Details Problems of vacuum energy and dark energy Problems of vacuum energy and dark energy

2004-05-11

arxiv.org/abs/hep-ph/0405089v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages; talk presented at the 18th Rencontre de Physique de la Vallee d'Aosta on Results and Perspectives in Particle Physic

Scientific paper

A simple description of the vacuum energy (cosmological constant) problem for non-experts is presented. Basic features of cosmology with non-zero vacuum energy are discussed. The astronomical data which indicate that the universe is filled with an anti-gravitating state of matter are described. The mechanisms which may lead to cancellation of almost infinite vacuum energy down to the astronomically observed value are discussed. The idea of dynamical adjustment is considered in some more detail.

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