FotU Symposium: 2 February 2023
We are happy to announce the next FotU symposium will be held on February 2nd 2023.
Location: van Swinderenhuys, Gronignen
A tentative timetable can be found below:
13:00- Doors open
13:30 - 14:30 Tim Lichtenberg (Kapteyn)
14:30 - 14:45 Break
14:45 - 15:45 Marcello Seri (Bernoulli)
15:45 - 16:00 Break
16:00 - 17:00 Steve Jones (VSI)
17:00 Drinks and poster session
The abstracts are given below:
Tim Lichtenberg (Kapteyn)
Title: Molten Exoplanets as a Window into the Earliest Earth
Abstract: Due to the absence of a reliable rock record from the early
Earth, our understanding of the environment that gave rise to life on
our own planet is clouded. Current and upcoming exoplanet surveys,
however, significantly widen our view of the distribution and
variability of rocky planets and their chemical inventories, giving
opportunity to test scenarios of early planetary evolution and
atmospheric formation. I will describe how rocky exoplanets in a
partially or fully molten state open a novel window into on the
earliest, high-temperature evolutionary regime of rocky worlds.
Increasing reconnaissance of high-temperature super-Earths will enable
us to infer the early climatic and geodynamic evolution of temperate
rocky worlds, providing crucial information on the environmental
context of the origins of life on Earth and are the next key step
toward the characterisation of potentially habitable exoplanets.
Marcello Seri (Bernoulli)
Title: chaotic scattering of light around extremal black holes
Abstract: embracing the spirit of FotU, certain relativistic theories
turn out to be very classical in some of their aspects. In this talk
we will focus on the scattering of light in configurations of static
extremal black holes in the the Einstein-Dilaton-Maxwell theory. We
will observe how this problem can be reduced to the study of
scattering for a classical hamiltonian system, prove the emergence of
chaotic scattering in a certain range of parameters and discuss some
of the many remaining open questions and related problems.
Steve Jones (VSI)
Title: Does antimatter fall up?
Abstract: Most physicists argue that antimatter will fall downwards on
the Earth, i.e. that the gravitational force between matter and
antimatter is attractive. There is strong theoretical reasoning to
support this, as well as indirect experimental evidence. However,
these results are not without their caveats, and as of yet, there is
no direct experimental evidence. Here, I will summarise the arguments
against antigravity, and describe the state-of-the-art antihydrogen
experiments which are aiming to measure the gravitational interaction
between matter and antimatter at the <1% level.