1.1k citations
- Centre National de la Recherche ScientifiqueFR14 papers
- Imperial College LondonGB11 papers
- Leibniz Institute for Astrophysics PotsdamDE10 papers
- Technische Universität BerlinDE8 papers
- Universität InnsbruckAT7 papers
- Max Planck Institute for the Physics of Complex SystemsDE6 papers
- Max Planck SocietyDE6 papers
- University College LondonGB6 papers
- Ben-Gurion University of the NegevIL5 papers
- Carl von Ossietzky Universität OldenburgDE5 papers
- Columbia UniversityUS5 papers
- Humboldt-Universität zu BerlinDE5 papers
10 papers · 1 filter
Exact radial solution in 2+1 gravity with a real scalar field
H. -J. Schmidt, D. Singleton
In this paper we give some general considerations about circularly symmetric, static space-times in 2+1 dimensions, focusing first on the surprising (at the time) existence of the…
Dynamics of Dirac-Born-Infeld dark energy interacting with dark matter
Chakkrit Kaeonikhom, Douglas Singleton, Sergey V. Sushkov +1
We study the dynamics of Dirac-Born-Infeld (DBI) dark energy interacting with dark matter. The DBI dark energy model considered here has a scalar field with a nonstandard kinetic e…
The tetralogy of Birkhoff theorems
Hans-Jürgen Schmidt
We classify the existent Birkhoff-type theorems into four classes: First, in field theory, the theorem states the absence of helicity 0- and spin 0-parts of the gravitational field…
A two measure model of dark energy and dark matter
Eduardo Guendelman, Douglas Singleton, Nattapong Yongram
In this work we construct a unified model of dark energy and dark matter. This is done with the following three elements: a gravitating scalar field, phi with a non-conventional ki…
Perihelion advance for orbits with large eccentricities in the Schwarzschild black hole
H. -J. Schmidt
We deduce a new formula for the perihelion advance of a test particle in the Schwarzschild black hole by applying a newly developed non-linear transformation within the Schwarzschi…
Gauss-Bonnet lagrangian G ln G and cosmological exact solutions
H. -J. Schmidt
For the lagrangian L = G ln G where G is the Gauss-Bonnet curvature scalar we deduce the field equation and solve it in closed form for 3-flat Friedman models using a statefinder p…