Cosmological BCS mechanism and the big bang singularity

被引:31
作者
Alexander, Stephon [1 ,2 ]
Biswas, Tirthabir [1 ]
机构
[1] Penn State Univ, Dept Phys, Inst Gravitat & Cosmos, University Pk, PA 16802 USA
[2] Haverford Coll, Dept Phys & Astron, Haverford, PA 19041 USA
来源
PHYSICAL REVIEW D | 2009年 / 80卷 / 02期
关键词
UNIVERSE; ENERGY; ENTROPY;
D O I
10.1103/PhysRevD.80.023501
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We provide a novel mechanism that resolves the big bang singularity present in Friedman-Lemaitre-Robertson-Walker space-times without the need for ghost fields. Building on the fact that a four-fermion interaction arises in general relativity when fermions are covariantly coupled, we show that at early times the decrease in scale factor enhances the correlation between pairs of fermions. This enhancement leads to a BCS-like condensation of the fermions and opens a gap dynamically driving the Hubble parameter H to zero and results in a nonsingular bounce, at least in some special cases.
引用
收藏
页数:9
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