科研之友
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摘要
We show that the string gas - a perfect fluid with the equation of state p = -1/3 rho possesses rather interesting properties. In Friedmann universes its presence can change the observable topology of the space; in the spherically symmetric spacetimes it produces rather bizzare geometries and in a way its influence on the rotation curves mimics the dark matter effects.
- 出版日期2012-1
