16 citations · 148 across the 34 of their papers we have counts for
5 papers · 1 filter
Brane induced gravity: Ghosts and naturalness
Ludwig Eglseer, Florian Niedermann, Robert Schneider
Linear stability of brane induced gravity in two codimensions on a static pure tension background is investigated. The brane is regularized as a ring of finite circumference in ext…
Radially stabilized inflating cosmic strings
Florian Niedermann, Robert Schneider
In General Relativity, cosmic strings are well known to produce a static, locally flat spacetime with a wedge removed. If the tension exceeds a critical value, the deficit angle be…
Cosmology on a cosmic ring
Florian Niedermann, Robert Schneider
We derive the modified Friedmann equations for a generalization of the Dvali-Gabadadze-Porrati (DGP) model in which the brane has one additional compact dimension. The main new fea…
The Universe as a Cosmic String
Florian Niedermann, Robert Schneider, Stefan Hofmann +1
The cosmology of brane induced gravity in six infinite dimensions is investigated. It is shown that a brane with Friedmann-Robertson-Walker symmetries necessarily acts as a source…
Interpretation of the Weyl tensor
Stefan Hofmann, Florian Niedermann, Robert Schneider
According to folklore in general relativity, the Weyl tensor can be decomposed into parts corresponding to Newton-like, incoming and outgoing wavelike field components. It is shown…