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gr-qc2001★ 37 cited
Dilatonic wormholes: construction, operation, maintenance and collapse to black holes
Sean A. Hayward, Sung-Won Kim, Hyunjoo Lee
The CGHS two-dimensional dilaton gravity model is generalized to include a ghost Klein-Gordon field, i.e. with negative gravitational coupling. This exotic radiation supports the e…
gr-qc2001★ 8 cited
Comment on `An extreme critical space-time: echoing and black-hole perturbations'
Gerard Clement, Sean A. Hayward
We show that the black hole perturbations of the Hayward static solution to the massless Einstein-Klein-Gordon equations are actually gauge artifacts resulting from the linearizati…
gr-qc2001★ 17 cited
Gravitational-wave dynamics and black-hole dynamics: second quasi-spherical approximation
Sean A. Hayward
Gravitational radiation with roughly spherical wavefronts, produced by roughly spherical black holes or other astrophysical objects, is described by an approximation scheme. The fi…