Open AccessTHE QUANTUM GRAVITY WITH TORSION AND GHOST-FREE DE SITTER GRAVITY (Ⅱ)——CHOST-FREE PROPERTY OF SO(3,2) DE SITTER GRAVITY
Author(s) -
Mu-Lin Yan,
Hongxia Guo
Publication year - 1984
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.33.1386
Subject(s) - physics , de sitter universe , de sitter space , mathematical physics , de sitter invariant special relativity , cosmological constant , minkowski space , quantum gravity , induced gravity , anti de sitter space , gravitation , tachyon , classical mechanics , quantum mechanics , quantum , universe
By using the rezults of our paper (I), the particle content in de Sitter gravity are explored. It is found that the SO(3, 2) de Sitter gravitational theory is ghost-free and tachyon-free, and the SO (4, 1) theory should be excluded. There are three kinds of particles in SO (3, 2) de Sitter gravity: JP=2+, 1- with m=0, and JP=0+ with m = 21/2L-1, (L is the radius of de Sitter pseudosphere). The spontaneous symmetry breaking of the Minkowski vacuum caused by the cosmological constant is also investigated at the tree level.