Repulsive gravity in tension stars

Details Repulsive gravity in tension stars Repulsive gravity in tension stars

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.252...53k&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 252, Sept. 1, 1991, p. 53-55.

Statistics

Computation

6

Computational Astrophysics, Gravitational Effects, Relativity, Stellar Gravitation, Tension, Mathematical Models, Pressure Effects, Schwarzschild Metric, Universe

Scientific paper

In stars, pressure opposes the attractive force of gravity. In general relativity, if the pressure is negative (a tension) and P is less than -1/3 rho(c)-squared, then the resulting gravity is repulsive. Such material is invoked in cosmology to give the inflation of the universe. In tension stars, this repulsive gravity is balanced by the tension. The simplest tension stars only exist in esoteric situations beyond the neck of an Einstein-Rosen bridge in Schwarzschild space. Here, tension material is confined within a massive shell of normal matter. The resulting object, while still repulsive inside, has an attractive exterior gravity and can, in principle, exist without horizons.

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