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/content/aapt/journal/ajp/83/6/10.1119/1.4907266
1.
1. P. A. M. Dirac, “ The cosmological constants,” Nature 139, 323323 (1937).
http://dx.doi.org/10.1038/139323a0
2.
2. C. Brans and R. H. Dicke, “ Mach's principle and a relativistic theory of gravitation,” Phys. Rev. 124(3), 925935 (1961).
http://dx.doi.org/10.1103/PhysRev.124.925
3.
3. K. Nordtvedt, “ Equivalence principle for massive bodies. 2. Theory,” Phys. Rev. 169(5), 10171025 (1968).
http://dx.doi.org/10.1103/PhysRev.169.1017
4.
4. S. G. Turyshev et al., “ 35 years of testing relativistic gravity: Where do we go from here?,” in Astrophysics, Clocks and Fundamental Constants, Lecture Notes in Physics Vol. 648, edited by S. G. Karshenboim ( WE Heraeus Stift, Bad Honnef, 2004), pp. 311330.
5.
5. R. D. Reasenberg, “ The constancy of G and other gravitational experiments,” Philos. Trans. R. Soc. A 310(1512), 227238 (1983).
http://dx.doi.org/10.1098/rsta.1983.0083
6.
6. V. M. Kaspi, J. H. Taylor, and M. Ryba, “ High-precision timing of millisecond pulsars. 3: Long-term monitoring of PSRS B1885+09 and B1937+21,” Astrophys. J. 428(2), 713728 (1994).
http://dx.doi.org/10.1086/174280
7.
7. E. Gaztanaga et al., “Bounds on the possible evolution of the gravitational constant from cosmological type-Ia supernovae,” Phys. Rev. D 65(2), 023506-19 (2001).
http://dx.doi.org/10.1103/PhysRevD.65.023506
8.
8. D. B. Guenther, L. M. Krauss, and P. Demarque, “ Testing the constancy of the gravitational constant using helioseismology,” Astrophys. J. 498(2), 871876 (1998).
http://dx.doi.org/10.1086/305567
9.
9. F. S. Accetta, L. M. Krauss, and P. Romanelli, “ New limits on the variability of G from big-bang nucleosynthesis,” Phys. Lett. B 248(1–2), 146150 (1990).
http://dx.doi.org/10.1016/0370-2693(90)90029-6
10.
10. Y. Lau, “ The large number hypothesis and Einstein's theory of gravitation,” Aust. J. Phys. 38(4), 547553 (1985).
http://dx.doi.org/10.1071/PH850547
11.
11. J. P. Uzan, “ Varying constants, gravitation and cosmology,” Living Rev. Relativ. 14(2), 1155 (2011); <http://www.livingreviews.org/lrr-2011-2>.
12.
12. M. Reuter and H. Weyer, “Running Newton constant, improved gravitational actions, and galaxy rotation curves,” Phys. Rev. D 70(12), 124028-128 (2004).
http://dx.doi.org/10.1103/PhysRevD.70.124028
13.
13. S. Ray et al., “ Dark energy models with a time-dependent gravitational constant,” Int. J. Mod. Phys. D 16(11), 17911802 (2007).
http://dx.doi.org/10.1142/S0218271807011097
14.
14. J. Ponce de Leon, “ Cosmological model with variable equations of state for matter and dark energy,” Class. Quantum Grav. 29(13), 135009-131 (2012).
http://dx.doi.org/10.1088/0264-9381/29/13/135009
15.
15. K. Freese et al., “ Cosmology with decaying vacuum energy,” Nucl. Phys. B 287(4), 797814 (1987).
http://dx.doi.org/10.1016/0550-3213(87)90129-5
16.
16. B. G. Sidharth, “ Tests for varying G,” Found. Phys. Lett. 19(6), 611617 (2006).
http://dx.doi.org/10.1007/s10702-006-1014-5
17.
17. J. A. Belinchón and I. Chakrabarty, “ Perfect fluid cosmological models with time-varying constants,” Int. J. Mod. Phys. D 12(6), 11131129 (2003).
http://dx.doi.org/10.1142/S0218271803003724
18.
18. V. Faraoni, Cosmology in Scalar-Tensor Gravity ( Kluwer, The Netherlands, 2004), pp. 8–12.
19.
19. M. Endō and T. Fukui, “ The cosmological term and a modified Brans-Dicke cosmology,” Gen. Relativ. Grav. 8(10), 833839 (1977).
http://dx.doi.org/10.1007/BF00759587
20.
20. E. Garcia-Berro et al., “ The variation of the gravitational constant inferred from the Hubble diagram of type Ia supernovae,” Int. J. Mod. Phys. D 15(8), 11631173 (2006).
http://dx.doi.org/10.1142/S0218271806008772
21.
21. J. D. Barrow and P. Parsons, “ Behaviour of cosmological models with varying G,” Phys. Rev. D 55(4), 19061936 (1997).
http://dx.doi.org/10.1103/PhysRevD.55.1906
22.
22. J. D. Barrow and J. Magueijo, “ Solving the quasi-flatness problems in Brans-Dickie cosmologies with a varying light speed,” Class. Quantum Grav. 16(4), 14351454 (1999).
http://dx.doi.org/10.1088/0264-9381/16/4/030
23.
23. R. Dungan and H. B. Prosper, “ Varying-G cosmology and type Ia supernovae,” Am. J. Phys. 79(1), 5762 (2011).
http://dx.doi.org/10.1119/1.3486585
24.
24. M. Kowalski et al., “ Improved cosmological constraints from new, old, and combined supernova data sets,” Astrophys. J. 686(2), 749778 (2008).
http://dx.doi.org/10.1086/589937
25.
25. H. Štefančić, “ Partial rip scenario—a cosmology with a growing cosmological term,” Phys. Lett. B 595(1-4), 915 (2004).
http://dx.doi.org/10.1016/j.physletb.2004.04.081
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/content/aapt/journal/ajp/83/6/10.1119/1.4907266
2015-06-01
2016-09-30

Abstract

In a recent paper, Dungan and Prosper claim that the Type Ia supernovae data alone are not enough to distinguish between the standard ΛCDM model and other models with varying . To substantiate this, they present two spatially flat variable FRW models with Λ = 0 that fit well the Type Ia supernova data. In these models they assumed that the energy momentum tensor of the matter distribution is conserved. We show that this assumption is inconsistent with variable cosmology when Λ is assumed to be constant, thus rendering the suggested models erroneous.

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