The Problem of Vacuum Energy and Cosmology (A lecture presented at the 4th Colloque Cosmologie, Paris, June, 1997; to be published in the Proceedings)

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/11450Quantum field theory predicts that vacuum energy (or what is the same, cosmological constant) should be 50-100 orders of magnitude larger than the existing astronomical limit. A very brief review of possible solutions of this problem is presented. A mechanism of adjustment of vacuum energy down to (almost) zero by the back-reaction of massless vector or second rank tensor fields is discussed.15 pages, latex twiceAstrophysicsThe Problem of Vacuum Energy and Cosmology (A lecture presented at the 4th Colloque Cosmologie, Paris, June, 1997; to be published in the Proceedings)text