ZARM - Key Persons
Research interests
Inhomogeneous cosmology
Averaging & fitting problem in cosmology
Quasi-local energies in general relativity
Asymptotic safety scenario of quantum gravity & quantum black holes
Research Interests
One of my primary interest was about the structure of thin massive discs. This research was mainly theoretical and centered on the self-gravitational potential of such discs, meaning the gravitational force produced by the disc itself. The structure and stability of these discs are generally due to the effect of a central source; however, in some systems the self-gravity force produced by the disc itself can be significant and important in the dynamical balance. This is the case for sufficiently massive and/or extended discs, present, for instance, in the first stage of the stellar formation. My following interest went to thick accretion discs which can be relevant to understand the central power sources in Active Galactic Nuclei or at the early stage of star formation. They can also be involved in the generation of bipolar outflows or jets. Thus, nowadays I am working on equilibrium configurations of charged perfect fluid of (self-gravitating) accretion discs in rotation embedded in a magnetic field. First studies have been done in the Newtonian regime and more recently in the General Relativity framework.
Job Titles:
- Am Fallturm
- Head of the Group
Research Interests
atom optics and quantum gases
test of fundamental physics and gravity theory
tests of Lorentz invariance
optical frequency standards
space science
Job Titles:
- Executive Director, Director Fluid Dynamics
- Head of the Team
Research interests
Asymptotic symmetries in gravity and the BMS group
Constructive gravity
Research interest
Rogue wave phenomenon in Ultracold Quantum Gases
Bose-Einstein Condensates with selfgravitational effects and short-range Yukawa gravity
Condensates on curved manifolds or in bubble traps