NUCLEOSYNTHESIS BOUNDS ON SCALAR-TENSOR GRAVITY - POWER-LAW COUPLINGS

被引：27
作者：
TORRES, DF
机构：
[1] Departamento de Física, Universidad Nacional de La Plata, 1900 La Plata Buenos Aires
来源：
PHYSICS LETTERS B | 1995年 / 359卷 / 3-4期
关键词：
NUCLEOSYNTHESIS; COSMOLOGY; SCALAR-TENSOR GRAVITY;
D O I：
10.1016/0370-2693(95)01098-B
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A simple model of variation of primordial helium production is used to fix bounds for the exponent of power-law type of couplings (omega(phi) proportional to phi(alpha)) in scalar-tensor theories of gravitation. It is found that alpha greater than or equal to 4 is compatible with the observed abundance. This lower limit is obtained for k = 0 models and for a constant Ohm(o)h(2) = 1 and varies for others values of this quantity.
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页码：249 / 253
页数：5
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