2016/02/02 by Charles J. Quarra, Quarra, Charles J. · 2 citations
Physics and Astronomy · #83C35 #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #gr-qc #msc:83C35
paper · pdf · doi:10.48550/arxiv.1602.01439
6 pages, 2 figures
arxiv created 2016/02/02 · arxiv updated 2016/02/04
A region-delimited gravitational wave field can be constructed, such that a subset of geodesics crossing this region will move faster than nearby geodesics moving entirely inside flat spacetime, along a preferred direction. Null geodesics inside this region will move faster-than-light according to far away observers. The waveform is synthesized from homogeneous plane wave solutions, and the resulting field is the gravitational equivalent of a Gaussian beam.