Properties of Asymptotically Flat Two-Dimensional Black Holes

Details Properties of Asymptotically Flat Two-Dimensional Black Holes Properties of Asymptotically Flat Two-Dimensional Black Holes

1992-02-19

arxiv.org/abs/hep-th/9202068v1

Class.Quant.Grav.10:1477-1494,1993

Physics

High Energy Physics

High Energy Physics - Theory

28 pages

Scientific paper

10.1088/0264-9381/10/8/010

We investigate properties of two-dimensional asymptotically flat black holes which arise in both string theory and in scale invariant theories of gravity. By introducing matter sources in the field equations we show how such objects can arise as the endpoint of gravitational collapse. We examine the motion of test particles outside the horizons, and show that they fall through in a finite amount of proper time and an infinite amount of coordinate time. We also investigate the thermodynamic and quantum properties, which give rise to a fundamental length scale. The 't Hooft prescription for cutting off eigenmodes of particle wave functions is shown to be source dependent, unlike the four-dimensional case. The relationship between these black holes and those considered previously in $(1+1)$ dimensions is discussed.

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