1997/08/06 by A. D. Dolgov, Dolgov, A. D.
Physics and Astronomy · #Advanced Mathematical Theories and Applications #Astrophysics (astro-ph) #Cosmology and Gravitation Theories #FOS: Physical sciences #Relativity and Gravitational Theory #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9708045
15 pages, latex twice
arxiv created 1997/08/06 · openalex publication_date 1997/08/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Quantum 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.