Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-05-13
Phys.Rev. D58 (1998) 123002
Astronomy and Astrophysics
Astrophysics
7 pages, 6 figures, submitted to Phys. Rev. D
Scientific paper
10.1103/PhysRevD.58.123002
We have studied finite temperature corrections to the baryon transport cross sections and diffusion coefficients. These corrections are based upon the recently computed renormalized electron mass and the modified state density due to the background thermal bath in the early universe. It is found that the optimum nucleosynthesis yields computed using our diffusion coefficients shift to longer distance scales by a factor of about 3. We also find that the minimum value of $^4 He$ abundance decreases by $\Delta Y_p \simeq 0.01$ while $D$ and $^7 Li$ increase. Effects of these results on constraints from primordial nucleosynthesis are discussed. In particular, we find that a large baryonic contribution to the closure density ($\Omega_b h_{50}^{2} \lsim 0.4$) may be allowed in inhomogeneous models corrected for finite temperature.
Mathews Grant J.
Suh In-Saeng
No associations
LandOfFree
Finite temperature effects on cosmological baryon diffusion and inhomogeneous Big-Bang nucleosynthesis does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Finite temperature effects on cosmological baryon diffusion and inhomogeneous Big-Bang nucleosynthesis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finite temperature effects on cosmological baryon diffusion and inhomogeneous Big-Bang nucleosynthesis will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-667649