ASTROPHYSICAL APPLICATIONS OF QUANTUM CORRECTIONS TO THE EQUATION OF STATE OF A PLASMA

被引:65
作者
HECKLER, AF
机构
来源
PHYSICAL REVIEW D | 1994年 / 49卷 / 02期
关键词
D O I
10.1103/PhysRevD.49.611
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The quantum electrodynamic correction to the equation of state of a plasma at finite temperature is applied to the areas of solar physics and cosmology. A previously neglected, purely quantum term in the correction is found to change the equation of state in tl;e solar core by -0.37%, which is roughly estimated to decrease the calculated high energy neutrino flux by about 2.2%. We also show that a previous calculation of the effect of this correction on big bang nucleosynthesis is incomplete, and we estimate the correction to the primordial helium abundance Y to be Delta Y=1.4X10(-4). A physical explanation for the correction is found in terms of corrections to the dispersion relation of the electron, positron, and photon.
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页码:611 / 617
页数:7
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