Abstract
The observations on galaxy rotation curves show significant discrepancies from the Newtonian theory. This issue could be explained by the effect of the anisotropy of the spacetime. Conversely, the spacetime anisotropy could also be constrained by the galaxy rotation curves. Finsler geometry is a kind of intrinsically anisotropic geometry. In this paper, we study the effect of the spacetime anisotropy at galactic scales in the Finsler spacetime. It is found that the Finslerian model has close relations with the Milgrom’s MOND. By performing the best-fit procedure to the galaxy rotation curves, we find that the anisotropic effects of the spacetime become significant when the Newtonian acceleration GM/r 2 is smaller than the critical acceleration a 0. Interestingly, the critical acceleration a 0, although varies between different galaxies, is in the order of magnitude \(cH_{0}/2\pi\sim10^{-10}~\mathrm{m\,s}^{-2}\).
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Notes
The gravitational vacuum field equation given by [52] is \(g^{F\,ab}\bar{\partial}_{a}\bar{\partial}_{b} \mathcal {R}-\frac{6}{F^{2}} \mathcal{R}+2g^{F\,ab} (\nabla_{a}S_{b}+S_{a}S_{b}+\bar{\partial}_{a}\nabla S_{b} )=0\). The S a -terms can be written as \(S_{a}=\ell ^{d}P_{d~ba}^{~b}\), where ℓ d≡y d/F and \(P_{d~ba}^{~b}\) are the coefficients of the cross basis dx∧δy/F [31]. Considering that \(\mathcal{R}=R^{a}_{~ab}y^{b}=-R^{a}_{~dab}y^{d} y^{b}=F^{2}(\ell^{d} R^{~a}_{d~ab}\ell^{b})=F^{2}(g^{ab}R_{ab})=F^{2} \mathit{Ric}\) and dropping the S a -terms, one can see that Ric=0 is one of the solutions of the above equation.
The symmetry of locally Minkowski space-time is different from that of Minkowski spacetime. The space length determined by the symmetry of locally Minkowski space-time is also different from the Euclidean length. So does the unit circle and its related quantity-π. Here, we denote the Finslerian π by π F , where “∧” is the “wedge product”. For more details please refer to the book of [53].
The interpolation function (23) is singular at x=0, but it is easy to show that lim x→0[μ(x)/x]=1.
References
S. Weinberg, Cosmology (Oxford University Press, New York, 2008)
E. Komatsu, et al. (WMAP Collaboration), Astrophys. J. Suppl. 192, 18 (2011)
N. Suzuki et al., Astrophys. J. 746, 85 (2012)
B.A. Reid et al., Mon. Not. R. Astron. Soc. 404, 60 (2010)
L. Perivolaropoulos, arXiv:1104.0539
A. Kashlinsky, F. Atrio-Barandela, D. Kocevski, H. Ebeling, Astrophys. J. 686, L49 (2009)
A. Kashlinsky, F. Atrio-Barandela, H. Ebeling, A. Edge, D. Kocevski, Astrophys. J. 712, L81 (2010)
J.K. Webb et al., Phys. Rev. Lett. 107, 191101 (2011)
M. Tegmark, A. de Oliveira-Costa, A. Hamilton, Phys. Rev. D 68, 123523 (2003)
K. Land, J. Magueijo, Phys. Rev. Lett. 95, 071301 (2005)
I. Antoniou, L. Perivolaropoulos, J. Cosmol. Astropart. Phys. 1012, 012 (2010)
E.A. Lim, Phys. Rev. D 71, 063504 (2005)
S. Kanno, J. Soda, Phys. Rev. D 74, 063505 (2006)
A. Arianto, F.P. Zen, B.E. Gunara, T Triyanta, S. Supardi, J. High Energy Phys. 09, 048 (2007)
T.S. Koivisto, D.F. Mota, J. Cosmol. Astropart. Phys. 08, 021 (2008)
S. Koh, B. Hu, J. Korean Phys. Soc. 60, 1983 (2012)
M. Watanabe, S. Kanno, J. Soda, Phys. Rev. Lett. 102, 191302 (2009)
J. Lee, E. Komatsu, Astrophys. J. 718, 60 (2010)
V.C. Rubin, W.K. Ford, N. Thonnard, Astrophys. J. 238, 471 (1980)
F. Walter, E. Brinks, W.J.G. de Blok, F. Bigiel, R.C. Kennicutt Jr., M.D. Thornley, A.K. Leroy, Astron. J. 136, 2563 (2008)
K.G. Begeman, A.H. Broeils, R.H. Sanders, Mon. Not. R. Astron. Soc. 249, 523 (1991)
M. Persic, P. Salucci, F. Stel, Mon. Not. R. Astron. Soc. 281, 27 (1996)
L. Chemin, W.J.G. de Blok, G.A. Mamon, Astron. J. 142, 109 (2011)
M. Milgrom, Astrophys. J. 270, 365 (1983)
M. Milgrom, Astrophys. J. 270, 371 (1983)
P. Horava, Phys. Rev. D 79, 084008 (2009)
P. Horava, J. High Energy Phys. 0903, 020 (2009)
P. Horava, Phys. Rev. Lett. 102, 161301 (2009)
V.F. Cardone, N. Radicella, M.L. Ruggiero, M. Capone, Mon. Not. R. Astron. Soc. 406, 1821 (2010)
V.F. Cardone, M. Capone, N. Radicella, M.L. Ruggiero, Mon. Not. R. Astron. Soc. 423, 141 (2012)
D. Bao, S.S. Chern, Z. Shen, An Introduction to Riemann–Finsler Geometry. Graduate Text in Mathematics, vol. 200 (Springer, New York, 2000)
H.C. Wang, J. Lond. Math. Soc. s1-22, 5 (1947)
X. Li, Z. Chang, Differ. Geom. Appl. 30, 737 (2012)
G.Yu. Bogoslovsky, Il Nuovo Cimento B 40, 99 (1977)
G.Yu. Bogoslovsky, Il Nuovo Cimento B 40, 116 (1977)
G.Yu. Bogoslovsky, Il Nuovo Cimento B 43, 377 (1978)
J.R. Ellis, N.E. Mavromatos, D.V. Nanopoulos, Phys. Rev. D 61, 027503 (1999)
F. Girelli, S. Liberati, L. Sindoni, Phys. Rev. D 75, 064015 (2007)
G.W. Gibbons, J. Gomis, C.N. Pope, Phys. Rev. D 76, 081701 (2007)
V.A. Kostelecky, Phys. Lett. B 701, 137 (2011)
Z. Chang, S. Wang, Eur. Phys. J. C 72, 2165 (2012)
Z. Chang, S. Wang, Eur. Phys. J. C 73, 2337 (2013)
A.P. Kouretsis, M. Stathakopoulos, P.C. Stavrinos, Phys. Rev. D 79, 104011 (2009)
Z. Chang, M.-H. Li, S. Wang, arXiv:1303.1596
Z. Chang, S. Wang, X. Li, Eur. Phys. J. C 72, 1838 (2012)
Z. Chang, M.-H. Li, X. Li, S. Wang, arXiv:1303.1593
X. Li, M.-H. Li, H.-N. Lin, Z. Chang, Mon. Not. R. Astron. Soc. 428, 2939 (2013)
F.A.E. Pirani, in Lectures on General Relativit, Brandeis Summer, Institute in Theoretical Physics, vol. 1 (Prentice-Hall, Englewood Cliffs, 1964), p. 459
S.F. Rutz, Comput. Phys. Commun. 115, 300 (1998)
S.S. Chern, Sci. Rep. Nat. Tsing Hua Univ. Ser. A 5, 95 (1948)
S.S. Chern, in Selected Papers, vol. II, Mathematics: Frontiers and Perspectives, ed. by V.I. Arnol’d (Springer, Heidelberg, 1989), p. 194
C. Pfeifer, M.N.R. Wohlfarth, Phys. Rev. D 85, 064009 (2012)
S.S. Chern, W.H. Chen, K.S. Lam, Lectures on Differential Geometry. Series on University Mathematics, vol. 1 (World Scientific, Beijing, 2006)
G. de Vaucouleurs, Handb. Phys. 53, 311 (1959)
K.C. Freeman, Astrophys. J. 160, 811 (1972)
W.J.G. de Blok, F. Walter, E. Brinks, C. Trachternach, S.-H. Oh, R.C. Kennicutt Jr., Astron. J. 136, 2648 (2008)
J. Mastache, J.L. Cervantes-Cota, A. de la Macorra, Phys. Rev. D 87, 063001 (2013)
V.A. Kostelecky, N. Russell, Rev. Mod. Phys. 83, 11 (2011)
D. Grumiller, Phys. Rev. Lett. 105, 211303 (2010)
H.-N. Lin, M.-H. Li, X. Li, Z. Chang, Mon. Not. R. Astron. Soc. 430, 450 (2013)
G.W. Angus, B. Famaey, H.S. Zhao, Mon. Not. R. Astron. Soc. 371, 138 (2008)
G.W. Angus, H.Y. Shan, H.S. Zhao, B. Famaey, Astrophys. J. 654, L13 (2007)
I. Ferreras, M. Sakellariadou, M.F. Yusaf, Phys. Rev. Lett. 100, 031302 (2008)
I. Ferreras, N.E. Mavromatos, M. Sakellariadou, M.F. Yusaf, Phys. Rev. D 80, 103506 (2009)
I. Ferreras, N.E. Mavromatos, M. Sakellariadou, M.F. Yusaf, Phys. Rev. D 86, 083507 (2012)
Acknowledgements
We are grateful to Y.G. Jiang for useful discussions. This work has been funded in part by the National Natural Science Fund of China under Grant No. 11075166 and No. 11147176.
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Chang, Z., Li, MH., Li, X. et al. Effects of spacetime anisotropy on the galaxy rotation curves. Eur. Phys. J. C 73, 2447 (2013). https://doi.org/10.1140/epjc/s10052-013-2447-1
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DOI: https://doi.org/10.1140/epjc/s10052-013-2447-1