Table of Contents
Universe, Volume 5, Issue 4 (April 2019)
- Issues are regarded as officially published after their release is announced to the table of contents alert mailing list.
- You may sign up for e-mail alerts to receive table of contents of newly released issues.
- PDF is the official format for papers published in both, html and pdf forms. To view the papers in pdf format, click on the "PDF Full-text" link, and use the free Adobe Reader to open them.
Cover Story (view full-size image) The linear magnetoelectric effect, which is known to occur in certain multiferroic materials, [...] Read more. The linear magnetoelectric effect, which is known to occur in certain multiferroic materials, results in polarization by magnetic fields and magnetization by electric fields. Here, we study its gravitational analogue, which arises in spacetimes whose metric has nonzero mixed components. Specifically, we show how it depends on the choice of spatial formalism for the electromagnetic fields, including differences in tensor weight, and also on the choice of coordinate chart. This is particularly important since magnetoelectric susceptibility relates the spatial electromagnetic fields. While the effect has long been known for the Kerr spacetime, we illustrate that it arises, perhaps more surprisingly, for the rotating (Langevin) Minkowski spacetime as well as for certain charts of the Schwarzschild spacetime and pp gravitational waves. View this paper.