BIG-BANG NUCLEOSYNTHESIS AS A PROBE OF THE GEOMETRY OF SUPERSPACE

被引：2
|
作者：
LLORENTE, A
PEREZMERCADER, J
机构：
[1] Laboratorio de Astrofísica Espacial y Física Fundamental, 28080 Madrid
来源：
PHYSICS LETTERS B | 1995年 / 355卷 / 3-4期
关键词：
D O I：
10.1016/0370-2693(95)00764-C
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the effect from a general ultralocal supermetric on primordial nucleosynthesis for Friedmann-Robertson-Walker cosmology. The parameter lambda of the supermetric changes the effective number of degrees of freedom, g*, which modifies the Friedmann equation. This modification produces variations in the production of primordial He-4. The observations of the primordial abundances of Light elements (He-4, D, He-3 and Li-7) allow to estimate bounds on the values of lambda from these observations: we obtain 0.91 less than or equal to lambda less than or equal to 1.01. This leeway in lambda can be used to explain possible incompatibilities in the standard big-bang nucleosynthesis.
引用
收藏
页码：461 / 465
页数：5
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