Non-geodesic motion in f (G) gravity with non-minimal coupling

被引：34
作者：
Mohseni, Morteza [1 ]
机构：
[1] Payame Noor Univ, Dept Phys, Tehran 193954697, Iran
来源：
PHYSICS LETTERS B | 2009年 / 682卷 / 01期
关键词：
Modified gravity; Extra force; Gauss-Bonnet gravity; DARK ENERGY;
D O I：
10.1016/j.physletb.2009.10.089
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The dynamics of test particles in f(g) modified Gauss-Bonnet gravity is investigated. It is shown that in f(g) gravity models with non-minimal coupling to matter, particles experience an extra force normal to their four-velocities and as a result move along non-geodesic world-lines. The explicit form of the extra force depends oil the function of the Gauss-Bonnet term included in coupling term. The effects of this force oil the relative accelerations of particles are studied. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：89 / 92
页数：4
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    [J]. PHYSICAL REVIEW D, 2009, 80 (04):
  • [2] Remarks on generalized Gauss-Bonnet dark energy
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    Ghalee, A.
    [J]. PHYSICAL REVIEW D, 2009, 79 (06):
  • [3] Dark energy dominance and cosmic acceleration in first-order formalism
    Allemandi, G
    Borowiec, A
    Francaviglia, M
    Odintsov, SD
    [J]. PHYSICAL REVIEW D, 2005, 72 (06):
  • [4] The future of the universe in modified gravitational theories: approaching a finite-time future singularity
    Bamba, Kazuharu
    Nojiri, Shin'ichi
    Odintsov, Sergei D.
    [J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2008, (10):
  • [5] Liouville-like solutions in dilaton gravity with Gauss-Bonnet modifications
    Bazeia, D.
    Menezes, R.
    Petrov, A. Y.
    [J]. EUROPEAN PHYSICAL JOURNAL C, 2008, 58 (01): : 171 - 177
  • [6] Extra force in f(R) modified theories of gravity
    Bertolami, Orfeu
    Bohmer, Christian G.
    Harko, Tiberiu
    Lobo, Francisco S. N.
    [J]. PHYSICAL REVIEW D, 2007, 75 (10):
  • [7] Stability of the Einstein static universe in modified Gauss-Bonnet gravity
    Boehmer, Christian G.
    Lobo, Francisco S. N.
    [J]. PHYSICAL REVIEW D, 2009, 79 (06):
  • [8] Dark energy and cosmological solutions in second-order string gravity
    Calcagni, G
    Tsujikawa, S
    Sami, M
    [J]. CLASSICAL AND QUANTUM GRAVITY, 2005, 22 (19) : 3977 - 4006
  • [9] A note on the viability of Gauss-Bonnet cosmology
    Chingangbam, R.
    Sami, M.
    Tretyakov, P. V.
    Toporensky, A. V.
    [J]. PHYSICS LETTERS B, 2008, 661 (2-3) : 162 - 166
  • [10] Dark energy in modified Gauss-Bonnet gravity: Late-time acceleration and the hierarchy problem
    Cognola, G
    Elizalde, E
    Nojiri, S
    Odintsov, SD
    Zerbini, S
    [J]. PHYSICAL REVIEW D, 2006, 73 (08):
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