3 citations · 9 across the 7 of their papers we have counts for
7 papers
Who's afraid of a negative lapse?
Robert Beig, Piotr T. Chruściel, Wan Cong
We rederive the Arnowitt-Deser-Misner equations in a framework in which the zeros of the lapse are innocuous, whether with or without changes of sign. We further develop and analys…
Elastically induced phase-shift and birefringence in optical fibers
Elisabeth Steininger, Thomas Mieling, Piotr T. Chruściel
We compute how elastic deformations of optical fibers affect light propagation therein. Specifically, we consider differences in wave-guiding properties of straight fibers subject…
Thomas-Wigner rotation via Clifford algebras
Piotr T. Chruściel, Helmuth Urbantke
We derive Macfarlane's formula for the Thomas-Wigner angle of rotation using Clifford-algebra methods. The presentation is pedagogical and elementary, suitable for students with so…
Kerr-AdS type higher dimensional black holes with non-spherical cross-sections of horizons
Piotr T. Chruściel, Wan Cong, Finnian Gray
We construct, in even spacetime dimensions, a family of singularity-free Kerr-Anti-de Sitter-like black holes with negatively curved cross-sections of conformal infinity and non-sp…
Cauchy problems for Einstein equations in three-dimensional spacetimes
Piotr T. Chruściel, Wan Cong, Théophile Quéau +1
We analyze existence and properties of solutions of two-dimensional general relativistic initial data sets with a negative cosmological constant, both on spacelike and characterist…
A Bogovskiǐ-type operator for Corvino-Schoen hyperbolic gluing
Piotr T. Chruściel, Albachiara Cogo, Andrea Nützi
We construct a solution operator for the linearized constant scalar curvature equation at hyperbolic space in space dimension larger than or equal to two. The solution operator has…
No Proca Photons
Florian Steininger, Thomas Mieling, Piotr T. Chruściel
We show that the Proca equation in vacuum, as well as its plausible modifications in dielectric media, is incompatible with experimental evidence, no matter how small the Proca mas…