Finite temperature wave-function renormalization, a comparative analysis
We compare two competing theories regarding finite temperature wave-function corrections for the process H {r_arrow} e{sup +}e{sup {minus}} and for n + {nu} {r_arrow} p + e{sup {minus}} and related processes of interest for primordial nucleosynthesis. Although the two methods are distinct (as shown in H {r_arrow} e{sup +}e{sup {minus}}) they yield the same finite temperature correction for all n {r_arrow} p and p {r_arrow} n processes. Both methods yield an increase in the He/H ratio of 0.01% due to finite temperature renormalization rather than a decrease of 0.16% as previously predicted. 6 refs., 3 figs.
- Research Organization:
- Texas Univ., Austin, TX (United States). Dept. of Physics
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- FG03-93ER40757
- OSTI ID:
- 466852
- Report Number(s):
- DOE/ER/40757-094; UTEXAS-HEP-97-3; ON: DE97003929; TRN: 97:009971
- Resource Relation:
- Other Information: PBD: [1996]
- Country of Publication:
- United States
- Language:
- English
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