Quintessence, Cosmic Coincidence, and the Cosmological Constant
作者： Ivaylo Zlatev , Limin Wang , Paul J. Steinhardt
DOI: 10.1103/PHYSREVLETT.82.896
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摘要: Recent observations suggest that a large fraction of the energy density Universe has negative pressure. One explanation is vacuum density; another quintessence in form scalar field slowly evolving down potential. In either case, key problem to explain why nearly coincides with matter today. The densities decrease at different rates as expands, so coincidence today appears require their ratio be set specific, infinitesimal value early Universe. this paper, we introduce notion ``tracker field,'' quintessence, and show how it may coincidence, adding new motivation for scenario.
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128.84.21.199参考文章(17)
Margit A. E. Dementi, Daniel R. Marlow, Val L. Fitch, Critical Problems in Physics Critical Problems in Physics. ,(1997)
J. P. Ostriker, Paul J. Steinhardt, The observational case for a low-density Universe with a non-zero cosmological constant Nature. ,vol. 377, pp. 600- 602 ,(1995) , 10.1038/377600A0
Michael S. Turner, Gary Steigman, Lawrence M. Krauss, Flatness of the universe - Reconciling theoretical prejudices with observational data Physical Review Letters. ,vol. 52, pp. 2090- 2093 ,(1984) , 10.1103/PHYSREVLETT.52.2090
R. R. Caldwell, Rahul Dave, Paul J. Steinhardt, Cosmological imprint of an energy component with general equation of state Physical Review Letters. ,vol. 80, pp. 1582- 1585 ,(1998) , 10.1103/PHYSREVLETT.80.1582
P. J. E. Peebles, Bharat Ratra, Cosmology with a Time Variable Cosmological Constant The Astrophysical Journal. ,vol. 325, ,(1988) , 10.1086/185100
Bharat Ratra, P. J. E. Peebles, Cosmological Consequences of a Rolling Homogeneous Scalar Field Physical Review D. ,vol. 37, pp. 3406- 3427 ,(1988) , 10.1103/PHYSREVD.37.3406
Joshua A. Frieman, Christopher T. Hill, Albert Stebbins, Ioav Waga, COSMOLOGY WITH ULTRALIGHT PSEUDO NAMBU-GOLDSTONE BOSONS Physical Review Letters. ,vol. 75, pp. 2077- 2080 ,(1995) , 10.1103/PHYSREVLETT.75.2077
Pedro G. Ferreira, Michael Joyce, Structure Formation with a Self-Tuning Scalar Field Physical Review Letters. ,vol. 79, pp. 4740- 4743 ,(1997) , 10.1103/PHYSREVLETT.79.4740
C. Wetterich, Cosmology and the fate of dilatation symmetry Nuclear Physics B. ,vol. 302, pp. 668- 696 ,(1988) , 10.1016/0550-3213(88)90193-9
Edmund J. Copeland, Andrew R. Liddle, David Wands, Exponential potentials and cosmological scaling solutions Physical Review D. ,vol. 57, pp. 4686- 4690 ,(1998) , 10.1103/PHYSREVD.57.4686