Dyonic dilaton black holes

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

24 pages, phyzzx, epsf, 7 in-text figures. Small addition to introduction, and a few extra references

Scientific paper

10.1088/0264-9381/12/7/017

The properties of static spherically symmetric black holes, which are both electrically and magnetically charged, and which are coupled to the dilaton in the presence of a cosmological constant, Lambda, are considered. It is shown that apart from the Reissner-Nordstrom-de Sitter solution with constant dilaton, such solutions do not exist if Lambda > 0 (in arbitrary spacetime dimension >=4 ). However, asymptotically anti-de Sitter dyonic black hole solutions with a non-trivial dilaton do exist if Lambda < 0. Both these solutions and the asymptotically flat (Lambda = 0) solutions are studied numerically for arbitrary values of the dilaton coupling parameter, g_0, in four dimensions. The asymptotically flat solutions are found to exhibit two horizons if g_0 = 0, 1, \sqrt{3}, \sqrt{6}, ..., \sqrt{n(n+1)/2},..., and one horizon otherwise. For asymptotically anti-de Sitter solutions the result is similar, but the corresponding values of g_0 are altered in a non-linear fashion which depends on Lambda and the mass and charges of the black holes. All dyonic solutions with Lambda <= 0 are found to have zero Hawking temperature in the extreme limit, however, regardless of the value of g_0.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Dyonic dilaton black holes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dyonic dilaton black holes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dyonic dilaton black holes will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-652865

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.