6,012 research outputs found
Elliptic function solutions in Jackiw-Teitelboim dilaton gravity
We present a new family of solutions for the Jackiw-Teitelboim model of
two-dimensional gravity with a negative cosmological constant. Here, a metric
of constant Ricci scalar curvature is constructed, and explicit linearly
independent solutions of the corresponding dilaton field equations are
determined. The metric is transformed to a black hole metric, and the dilaton
solutions are expressed in terms of Jacobi elliptic functions. Using these
solutions we compute, for example, Killing vectors for the metric
On Generalized Monopole Spherical Harmonics and the Wave Equation of a Charged Massive Kerr Black Hole
We find linearly independent solutions of the Goncharov-Firsova equation in
the case of a massive complex scalar field on a Kerr black hole. The solutions
generalize, in some sense, the classical monopole spherical harmonic solutions
previously studied in the massless cases.Comment: Accepted for publication, Mod. Phys. Lett. A. 13 pages, including
reference
Passive venting technique for shallow cavities
A device is introduced for reducing drag and store separation difficulties caused by shallow cavities on aircraft in supersonic flight consisting of a group of hollow pipes the same length as the cavity. The pipes are attached to the cavity floor so as to allow air to flow through the pipes. This device allows air to flow through the pipes opposite to the direction of flow outside the pipes. This results in reduced drag and improved store separation characteristics
High impact pressure regulator Patent
High impact pressure regulator having minimum number of lightweight movable element
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