New Parametrization of the Dark-Energy Equation of State with a Single Parameter
Abstract
:1. Introduction
2. New Single-Parameter Equation-of-State Parametrization
3. Observational Constraints
4. Cosmographic Analysis and Statefinder Diagnostic
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
Appendix A. Observational Data
Appendix A.1. H(z) Data
z | (km/s/Mpc) | Method | Reference |
---|---|---|---|
0.00 | 69.1 ± 1.3 | a | [85] |
0.07 | 70.4 ± 20 | a | [86] |
0.07 | 69.0 ± 19.6 | a | [86] |
0.09 | 70.4 ± 12.2 | a | [87] |
0.10 | 70.4 ± 12.2 | a | [86] |
0.120 | 68.6 ± 26.2 | a | [86] |
0.12 | 70.0 ± 26.7 | a | [85] |
0.170 | 83.0 ± 8 | a | [87] |
0.170 | 84.7 ± 8.2 | a | [87] |
0.179 | 76.5 ± 4 | a | [88] |
0.1791 | 75.0 ± 4 | a | [88] |
0.199 | 76.5 ± 5.1 | a | [88] |
0.1993 | 75.0 ± 5 | a | [88] |
0.200 | 72.9 ± 29.6 | a | [86] |
0.20 | 74.4 ± 30.2 | a | [86] |
0.24 | 81.5 ± 2.7 | b | [89] |
0.27 | 78.6 ± 14.3 | a | [87] |
0.280 | 88.8 ± 36.3 | a | [86] |
0.28 | 90.6 ± 37.3 | a | [85] |
0.35 | 84.4 ± 8.6 | b | [85] |
0.3519 | 83.0 ± 14 | a | [88] |
0.352 | 84.7 ± 14.3 | a | [88] |
0.38 | 81.5 ± 1.9 | b | [90] |
0.3802 | 83.0 ± 13.5 | a | [91] |
0.3802 | 84.7 ± 14.1 | a | [91] |
0.40 | 95.0 ± 17 | a | [87] |
0.40 | 96.9 ± 17.3 | a | [87] |
0.4004 | 77.0 ± 10.2 | a | [91] |
0.4004 | 78.6 ± 10.4 | a | [91] |
0.4247 | 87.1 ± 11.2 | a | [91] |
0.4247 | 88.9 ± 11.4 | a | [91] |
0.43 | 88.3 ± 3.8 | a | [85] |
0.44 | 84.3 ± 7.9 | a | [92] |
0.4497 | 92.8 ± 12.9 | a | [91] |
0.4497 | 94.7 ± 13.1 | a | [91] |
0.470 | 89.0 ± 34.0 | a | [93] |
0.47 | 90.8 ± 50.6 | a | [93] |
0.4783 | 80.0 ± 99.0 | a | [91] |
0.4783 | 82.5 ± 9.2 | a | [91] |
0.48 | 99.0 ± 63.2 | a | [93] |
0.51 | 90.8 ± 1.9 | b | [90] |
0.57 | 98.8 ± 3.4 | b | [86] |
0.593 | 104.0 ± 13.0 | a | [88] |
0.593 | 106.1 ± 13.3 | a | [88] |
0.60 | 89.7 ± 6.2 | a | [86] |
0.61 | 97.8 ± 2.1 | b | [90] |
0.64 | 98.82 ± 2.98 | b | [94] |
0.6797 | 92.0 ± 8 | a | [88] |
0.68 | 93.9 ± 8.1 | a | [88] |
0.73 | 99.3 ± 7.1 | a | [92] |
0.7812 | 105.0 ± 12 | a | [88] |
0.781 | 107.1 ± 12.2 | a | [88] |
0.875 | 127.6 ± 17.3 | a | [88] |
0.8754 | 125.0 ± 17 | a | [88] |
0.88 | 91.8 ± 40.8 | a | [95] |
0.880 | 90.0 ± 40 | a | [93] |
0.90 | 69.0 ± 12 | a | [87] |
0.90 | 119.4 ± 23.4 | a | [87] |
0.900 | 117.0 ± 23 | a | [87] |
1.037 | 157.2 ± 20.4 | a | [88] |
1.037 | 154.0 ± 20 | a | [88] |
1.30 | 171.4 ± 17.3 | a | [87] |
1.300 | 168.0 ± 17 | a | [87] |
1.363 | 160.0 ± 33.6 | a | [96] |
1.363 | 163.3 ± 34.3 | a | [96] |
1.430 | 177.0 ± 18 | a | [87] |
1.43 | 180.6 ± 18.3 | a | [87] |
1.530 | 140.0 ± 14 | a | [87] |
1.53 | 142.9 ± 14.2 | a | [87] |
1.750 | 202.0 ± 40 | a | [87] |
1.75 | 206.1 ± 40.8 | a | [87] |
1.965 | 186.5 ± 50.4 | a | [96] |
1.965 | 190.3 ± 51.4 | a | [96] |
2.30 | 228.0 ± 8.1 | c | [97] |
2.34 | 226.5 ± 7.1 | c | [97] |
2.36 | 230.6 ± 8.2 | c | [98] |
Appendix A.2. Pantheon Data
Appendix A.3. Baryon Acoustic Oscillations (BAO)
Appendix A.4. Joint Analysis
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Dataset | (km/s/Mpc) | |||
---|---|---|---|---|
(77 points data) | ||||
+ + |
Dataset | |||
---|---|---|---|
(77 points data) | ≃0.7804 | ||
≃0.7811 | |||
≃0.7759 | |||
+ + | ≃0.7804 |
Dataset | j | s | l | m | r | |
---|---|---|---|---|---|---|
(77 points data) | ||||||
+ + |
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Singh, J.K.; Singh, P.; Saridakis, E.N.; Myrzakul, S.; Balhara, H. New Parametrization of the Dark-Energy Equation of State with a Single Parameter. Universe 2024, 10, 246. https://doi.org/10.3390/universe10060246
Singh JK, Singh P, Saridakis EN, Myrzakul S, Balhara H. New Parametrization of the Dark-Energy Equation of State with a Single Parameter. Universe. 2024; 10(6):246. https://doi.org/10.3390/universe10060246
Chicago/Turabian StyleSingh, Jainendra Kumar, Preeti Singh, Emmanuel N. Saridakis, Shynaray Myrzakul, and Harshna Balhara. 2024. "New Parametrization of the Dark-Energy Equation of State with a Single Parameter" Universe 10, no. 6: 246. https://doi.org/10.3390/universe10060246