Current seminars
In addition to the Vienna relativity seminars, the calendars above sometimes contain other events of interest to members of the relativity group. The seminars of the Vienna relativity group are listed below.
Currently (unless indicated otherwise) all seminars take place on Wednesday at 14:15 in Seminarraum A, Währinger Strasse 17, 2nd Floor.
The Mathematical Physics Seminars take place on Tuesdays at 13.45.
The Particle Physics Seminars take place on Tuesdays at 16.15.
- Wednesday, November 20th, 14:15
Daniel Grumiller (TU Wien): NEC angle in critical collapse
We identify a new critical parameter in Choptuik's gravitational collapse: the angle at which null energy condition (NEC) saturation lines intersect at the center of the critical spacetime. These NEC lines coincide with regions of vanishing curvature, dividing spacetime into stripes of positive and negative curvature. By numerically solving Choptuik's original system we find the NEC angle to be \alpha=0.64 (about 37 degrees) and analytically derive \alpha=2\arccot(D-1) for any spacetime dimension D>3.
- Wednesday, November 27th, 14:15
Marios Christodoulou (IQOQI Vienna): Frontiers in Table Top Quantum Gravity
Table Top Quantum Gravity nowadays colloquially refers to a forming interdisciplinary field that includes diverse contributions from theorists, experimentalists and philosophers alike across a range of disciplines from spacetime physics to quantum technologies. I discuss some of my contributions to the debate surrounding this nascent research field, while giving an overview of recent ideas and foundational issues that have arisen.