Hannover 2010 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 55: Poster II

Q 55.90: Poster

Donnerstag, 11. März 2010, 16:00–19:00, Lichthof

On the brink of causality: Wave propagation in Gödel’s Universe — •Michael Samaniego, Endre Kajari, and Wolfgang P. Schleich — Institut für Quantenphysik, Universität Ulm, 89069 Ulm, Germany

In 1949 Kurt Gödel presented a cosmological solution of Einstein’s field equations, the so-called Gödel Universe, which is stationary, homogeneous, but anisotropic. A particularly interesting feature of Gödel’s Universe is the existence of closed timelike world lines, which allow for time travel. Thus, a well-posed Cauchy initial value problem is only possible when we restrict ourselves to a specific spacetime region in Gödel’s Universe. In this work, we examine a special type of wave propagation in Gödel’s Universe based on a well-posed Cauchy initial value problem for the Klein-Gordon equation.