أعرض في EDS

Projective Invariance in Cosmological Models and Dark Energy

التفاصيل البيبلوغرافية
العنوان: Projective Invariance in Cosmological Models and Dark Energy
المؤلفون: W. M. Baker
المصدر: International Journal of Theoretical Physics. 45:2257-2273
بيانات النشر: Springer Science and Business Media LLC, 2006.
سنة النشر: 2006
مصطلحات موضوعية: Physics, Physics and Astronomy (miscellaneous), General Mathematics, Torsion (mechanics), Cosmological constant, Invariant (physics), Torsion field, Gravitation, General Relativity and Quantum Cosmology, symbols.namesake, Riemann hypothesis, Theoretical physics, Classical mechanics, symbols, Dark energy, Einstein
الوصف: We study theories of gravitation that are based on the Einstein – Hilbert action that are not projectively invariant and can therefore completely determine their connections. We are thus lead to the conclusion that the geometry is necessarily Riemann – Cartan and at least the trace part of a torsion field must be present. We examine the consequence of including these torsion fields in cosmological models. Our results differ from those obtained earlier in the Einstein – Cartan – Sciama – Kibble theory. We also consider a model that includes a series of quadratic torsion terms. This series leads to a potential function that has the effect of “turning on” the cosmological constant. This potential function then acts like dark energy. This model also shows that the torsion field can produce an inflationary period.
تدمد: 1572-9575
0020-7748
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::19dc550a27b89f9377a7c55791ec37fa
https://doi.org/10.1007/s10773-006-9192-2
حقوق: CLOSED
رقم الأكسشن: edsair.doi...........19dc550a27b89f9377a7c55791ec37fa
قاعدة البيانات: OpenAIRE
الوصف
تدمد:15729575
00207748