title: Displacement-noise-free gravitational-wave detection.
abstract: We present a new idea that allows us to detect gravitational waves without being disturbed by any kind of displacement noise, based on the fact that gravitational waves and test-mass motions affect the propagations of light differently. We demonstrate this idea by analyzing a simple toy model consisting of three equally-separated objects on a line. By taking a certain combination of light travel times between these objects, we construct an observable free from the displacement of each object, which has a reasonable sensitivity to gravitational waves.
authors.affiliation: TAMA Project, National Astronomical Observatory of Japan, Mitaka, Tokyo, Japan.
authors.forename: Seiji
authors.initials: S
authors.lastname: Kawamura
authors.forename: Yanbei
authors.initials: Y
authors.lastname: Chen