Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2001-02-06
Phys.Rev. D63 (2001) 124011
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
21 pages
Scientific paper
10.1103/PhysRevD.63.124011
We present a new solution to dilaton-axion gravity which looks like a rotating Bertotti-Robinson (BR) Universe. It is supported by an homogeneous Maxwell field and a linear axion and can be obtained as a near-horizon limit of extremal rotating dilaton-axion black holes. It has the isometry $SL(2,R)\times U(1)$ where U(1) is the remnant of the SO(3) symmetry of BR broken by rotation, while $SL(2,R)$ corresponds to the $AdS_2$ sector which no longer factors out of the full spacetime. Alternatively our solution can be obtained from the D=5 vacuum counterpart to the dyonic BR with equal electric and magnetic field strengths. The derivation amounts to smearing it in D=6 and then reducing to D=4 with dualization of one Kaluza-Klein two-form in D=5 to produce an axion. Using a similar dualization procedure, the rotating BR solution is uplifted to D=11 supergravity. We show that it breaks all supersymmetries of N=4 supergravity in D=4, and that its higher dimensional embeddings are not supersymmetric either. But, hopefully it may provide a new arena for corformal mechanics and holography. Applying a complex coordinate transformation we also derive a BR solution endowed with a NUT parameter.
Clement Gerard
Gal'tsov Dmitri
No associations
LandOfFree
Bertotti-Robinson type solutions to Dilaton-Axion Gravity 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 Bertotti-Robinson type solutions to Dilaton-Axion Gravity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bertotti-Robinson type solutions to Dilaton-Axion Gravity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-492263