Physikalisches Kolloquium

Programm für das Wintersemester 2021/2022

Tuesdays, 16 Uhr c.t.

Institut für Kernphysik, Hybrid Seminar

19.10.21Kirill Melnikov, TTP, Karlsruher Institute of Technology
To be announced
16 Uhr c.t., Staudinger-Hörsaal, Ackermannweg 10, MPI-P


The location of the first colloquium is Staudinger-Hörsaal, Ackermannweg 10, MPI-P

zukünftige Termine
26.10.21Alfons Weber, University of Mainz
Neutrinos are the most abandon matter particle in the universe, but very little is known about them. Originally proposed by Pauli as an undetectable placeholder to save energy- and angular momentum conservation, they have come a long way and surprising us at every step. It is now known, that neutrinos have mass and that the mass- and interaction-eigenstates are not the same, which leads to a phenomenon called neutrino oscillations. The colloquium will report on the current knowledge on the field concentrating on accelerator based experiments and highlight future facilities, which will make precision experiments and might tell us, if neutrinos and anti-neutrinos behave the same or not. Differences between neutrinos and anti-neutrinos (CP-violation) may shed some light why our universe is matter dominated.
16 Uhr c.t., Hörsaal CO2 Chemie - Nord-Ost (2121) Duesbergweg 10 - 14

02.11.21Dr. Mickaël Rigault, CNRS/IN2P3
Supernova Cosmology
16 Uhr c.t., Hörsaal CO2 Chemie - Nord-Ost (2121) Duesbergweg 10 - 14

09.11.21Christian Smorra, University of Mainz
STEP Portable Anti-Proton-Trap
16 Uhr c.t., Hörsaal CO2 Chemie - Nord-Ost (2121) Duesbergweg 10 - 14

16.11.21Hartmut Löwen, Universität Düsseldorf
Ordinary materials are "passive" in the sense that their constituents are typically made by inert particles which are subjected to thermal fluctuations, internal interactions and external fields but do not move on their own. Living systems, like schools of fish, swarms of birds, pedestrians and swimming microbes are called "active matter" since they are composed of self-propelled constituents. Active matter is intrinsically in nonequilibrium and exhibits a plethora of novel phenomena as revealed by a recent combined effort of statistical theory, computer simulation and real-space experiments. After an introduction into the physics of active matter focussing on biological and artificial microswimmers as key examples of active soft matter [1], a number of single-particle and collective phenomena in active matter will be adressed including novel structures like "rotelles" [2] and "active droploids" [3]. [1] For a review, see: C. Bechinger, R. di Leonardo, H. Löwen, C. Reichhardt, G. Volpe, G. Volpe, Active particles in complex and crowded environments, Reviews of Modern Physics 88, 045006 (2016). [2] C. Scholz, A. Ldov, T. Pöschel, M. Engel, H. Löwen, Surfactants and rotelles in active chiral fluids, Science Advances 7, eabf8998 (2021). [3] J. Grauer et al, Active droploids, arXiv:2109.10677
16 Uhr c.t., Hörsaal CO2 Chemie - Nord-Ost (2121) Duesbergweg 10 - 14

23.11.21Rainer Blatt, Innsbruck
Atomphysik und Quantencomputing
16 Uhr c.t., Hörsaal CO2 Chemie - Nord-Ost (2121) Duesbergweg 10 - 14

30.11.21Achim Schwenk, Technische Universität Darmstadt
Frontiers in Nuclear Theory
16 Uhr c.t., Hörsaal CO2 Chemie - Nord-Ost (2121) Duesbergweg 10 - 14

07.12.21Edda Gschwendtner, to be announced
The construcTon of ever larger and costlier accelerator faciliTes has its limits, and new technologies will be needed topush the energy fronTer. Plasma wakefield acceleraTon is a rapidly developing field which appears to be a auspiciouscandidate technology for future high-energy acceleratorsproviding acceleraTon gradients a factor 10 to 1000 larger thanin convenTonal radio-frequency metallic caviTes used in current accelerators.This presentaTon introduces the plasma wakefield acceleraTon technology, shows the technological challenges, gives anoverview of the state of the art and shows promising results on the example of the advanced proton driven plasmawakefield experiment, AWAKE, at CERN.
16 Uhr c.t., Hörsaal CO2 Chemie - Nord-Ost (2121) Duesbergweg 10 - 14

14.12.21Dr. Benjamin Dönigus, Goethe-Universität Frankfurt
The high collision energies reached at the Large Hadron Collider (LHC) at CERN lead to significant production rates of fragile objects, i.e. objects whose binding energies are small compared to the average kinetic energy of the particles produced in the system. Such objects are, for instance, light (anti-)nuclei and (anti-)hypernuclei. The most extreme example here is the hypertriton, a bound state of a proton, a neutron and a lambda, where the separation energy of the lambda is only around 130 keV. These states, from the anti-deuteron up to the anti-alpha nuclei, are nevertheless created and observed in the hot + rough environment of proton-proton and heavy-ion collisions at the LHC. The reached temperaturesarehigher than156 MeV, corresponding to 1.8 x1012K.Selected highlights ofmeasurements of these fragile objects will be presented.
16 Uhr c.t., Hörsaal CO2 Chemie - Nord-Ost (2121) Duesbergweg 10 - 14

04.01.22Dr. Dionysis Antipas, University of Mainz
Parity violation in atoms
16 Uhr c.t., Hörsaal CO2 Chemie - Nord-Ost (2121) Duesbergweg 10 - 14

11.01.22Hans-Jürgen Butt, MPI für Polymerforschung
Wetting on adaptive surfaces
16:15 Uhr s.t., Hörsaal CO2, Chemie - Nord-Ost (2121) Duesbergweg 10 - 14

18.01.22Marek Kowalski, HU Berlin/DESY
Multi-messanger Astronomy (TDEs)
16 Uhr c.t., Chemie - Nord-Ost (2121) Duesbergweg 10 - 14

25.01.22Mikhail Eremets, MPIC Mainz
16 Uhr c.t., Hörsaal CO2 Chemie - Nord-Ost (2121) Duesbergweg 10 - 14

01.02.22Julie Grollier, CNRS/Thales Lab
Neuronale Netze / Festkörper
16 Uhr c.t., via Zoom

Hörsaal CO2, Chemie - Nord-Ost (2121), Duesbergweg 10 - 14


Prof. Dr. Sebastian Böser
Institut für Physik, ETAP

Prof. Dr. Frank Maas
Institut für Kernphysik