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LQC Lambda-CDM model bounce radius... |
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| Feb22-12, 05:14 PM | #1 |
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LQC Lambda-CDM model bounce radius...These are my equations for the total Universe_mass-energy equivalence based upon the Lambda-CDM model parameters and the Hubble Space Telescope (HST) and WMAP observational parameters and the observable Universe radius in Systeme International units. I attempted to collapse the Lambda-CDM model parameter dimensions using the maximum LQC bounce density to determine the bounce radius. Observable Universe radius: [tex]R_u = 4.399 \cdot 10^{26} \; \text{m}[/tex] Lambda-CDM stellar Baryon density parameter: [tex]\Omega_s = 0.005[/tex] Hubble Space Telescope observable stellar number: [tex]dN_s = 10^{22}[/tex] Hubble Space Telescope observable stellar volume: [tex]dV_s = 3.3871 \cdot 10^{78} \; \text{m}^3 \; \; \; (4 \cdot 10^{30} \; \text{ly}^3)[/tex] Solar mass: [tex]M_{\odot} = 1.9891 \cdot 10^{30} \; \text{kg}[/tex] Planck energy density: [tex]\boxed{\rho_p = \frac{E_p}{V_p} = \frac{3 c^7}{4 \pi \hbar G^2}}[/tex] [tex]\boxed{\rho_p = 1.106 \cdot 10^{113} \; \frac{\text{j}}{\text{m}^3}}[/tex] Universe_mass-energy equivalence total energy: [tex]\boxed{E_t = \frac{4 \pi c^2 M_{\odot}}{3 \Omega_s} \left( \frac{dN_s}{dV_s} \right) R_u^3}[/tex] Total amount of energy in the Universe: [tex]\boxed{E_t = 3.764 \cdot 10^{73} \; \text{j}}[/tex] Universe total energy density: [tex]\rho_u = \frac{E_t}{V_u} = \frac{3 E_t}{4 \pi R_u^3} = \frac{M_{\odot} c^2}{\Omega_s} \left( \frac{dN_s}{dV_s} \right)[/tex] LQC maximum energy density parameter: (ref. 10 p. 73 (5.7)) [tex]\boxed{\Omega_{LQC} = \frac{\rho_{\text{max}}}{\rho_p} = \frac{\hbar G}{2 \gamma^2 \lambda^2 c^7} = 0.41}[/tex] Universe total energy density equivalent to LQC maximum energy density: [tex]\rho_u = \rho_{\text{max}}[/tex] Integration via substitution: [tex]\frac{3 E_t}{4 \pi R_{LQC}^3} = \Omega_{LQC} \rho_p[/tex] Universe LQC Lambda-CDM bounce radius: [tex]\boxed{R_{LQC} = \left( \frac{3 E_t}{4 \pi \Omega_{LQC} \rho_p} \right)^{\frac{1}{3}}}[/tex] [tex]\boxed{R_{LQC} = 5.829 \cdot 10^{-14} \; \text{m}}[/tex] Reference: Planck energy - Wikipedia Planck length - Wikipedia Lambda-CDM_model - Wikipedia Universe - Wikipedia Observable universe - Wikipedia Dark matter - Wikipedia Dark energy - Wikipedia Friedmann equations - Wikipedia Total amount of energy in the Universe - Orion1 #13 Loop Quantum Cosmology: A Status Report - Abhay Ashtekar, Parampreet Singh |
| Mar1-12, 12:33 PM | #2 |
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May please Check with Maattihias Bartelmann of MPI for Astrophysics Garching Germany.
I have his paper with me on this subject,and found promising like yours,but I have to compare. |
| Mar6-12, 12:27 AM | #3 |
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Universe total energy density equivalent to Planck energy density: [tex]\rho_u = \rho_{p}[/tex] Integration via substitution: [tex]\frac{3 E_t}{4 \pi R_{1}^3} = \rho_p[/tex] Universe Planck energy density bounce radius: [tex]\boxed{R_{1} = \left( \frac{3 E_t}{4 \pi \rho_p} \right)^{\frac{1}{3}}}[/tex] [tex]\boxed{R_{1} = 4.330 \cdot 10^{-14} \; \text{m}}[/tex] Reference: Cosmology - Matthias Bartelmann |
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