1k citations · 3.4k across the 42 of their papers we have counts for
42 papers
Generating exact polytropes in non-conservative unimodular geometries
Sudan Hansraj, Chevarra Hansraj, Njabulo Mkhize +2
The trace-free Einstein equations contain one equation less than the complete field equations. In a static and spherically symmetric spacetime, the number of field equations is thu…
Models of light-like charges with non-geodesic world lines
Christian G. Boehmer, Peter A. Hogan
Massless particles in General Relativity move with the speed of light, their trajectories in spacetime are described by null geodesics. This is independent of the electrical charge…
Chirality in the plane
Christian G. Boehmer, Yongjo Lee, Patrizio Neff
It is well-known that many three-dimensional chiral material models become non-chiral when reduced to two dimensions. Chiral properties of the two-dimensional model can then be res…
A Vaidya-type generalisation of Kerr space-time
Christian G. Boehmer, Peter A. Hogan
A new Vaidya-type generalisation of Kerr space-time is constructed by requiring the Kerr mass and angular momentum per unit mass to depend upon a variable which has a simple geomet…
New classes of modified teleparallel gravity models
Sebastian Bahamonde, Christian G. Boehmer, Martin Krssak
New classes of modified teleparallel theories of gravity are introduced. The action of this theory is constructed to be a function of the irreducible parts of torsion $f(T_{\rm ax}…
Interacting quintessence from a variational approach Part II: derivative couplings
Christian G. Boehmer, Nicola Tamanini, Matthew Wright
We consider an original variational approach for building new models of quintessence interacting with dark or baryonic matter. The coupling is introduced at the Lagrangian level us…