2007/08/19 by Руслан Шарипов, Ruslan Sharipov, Sharipov, Ruslan · 1 citation
Mathematics · Physics and Astronomy · #Cosmology and Gravitation Theories #Quantum Electrodynamics and Casimir Effect #Relativity and Gravitational Theory #math-ph #math.DG #math.MP #msc:53B30 #msc:81T20 #msc:83F05 #msc:85A40
paper · pdf · doi:10.48550/arxiv.0708.2508
AmSTeX, 19 pages, amsppt style
arxiv created 2007/08/19 · arxiv updated 2009/12/01
Killing vector fields of a closed homogeneous and isotropic universe are studied. It is shown that in general case there is no time-like Killing vector fields in such a universe. Two exceptional cases are revealed.