Kolloquien
Sommersemester 2023
URL to ICS calendar of this seminar
Kirchhoff-Institut für Physik, Otto-Haxel-Hörsaal
Friday 17:15
13.4.2023 17:30
INF 308, Hörsaal 1
Kolloquium der 50. Heidelberger Graduiertentage - Hans Jensen Invited Lecture
21.4.2023 17:00
KIP, INF 227, Hörsaal 1
I will start with an overview of the status of dark matter searches and of the prospects
for uncovering its nature in the next decade. I will then focus on the interplay between
dark matter, black holes, and gravitational waves, and discuss the prospects for
characterizing and identifying dark matter using gravitational waves, covering a wide
range of candidates and signals. Finally, I will present some new results on the
detectability of dark matter overdensities around black holes in binary systems, and
argue that future interferometers may enable precision studies of the dark matter
distribution and particle properties.
more...
28.4.2023 17:00
KIP, INF 227, Hörsaal 1
In this talk, I will generally introduce the area of emerging infectious diseases and
specifically discuss mechanism and traits determining animal, insects and human
interactions and state-of-the-art data driven approaches and findings from empirical
studies.
more...
5.5.2023 17:00
KIP, INF 227, Hörsaal 1
The extraordinary advances in quantum control of matter and light have been
transformative for atomic and molecular precision measurements enabling probes of
the most basic laws of Nature to gain a fundamental understanding of the physical
Universe.
more...
12.5.2023 17:00
KIP, INF 227, Hörsaal 1
Ever since Hawking's discovery that quantum black holes radiate, a microscopic
understanding of this phenomenon has been a litmus test for a consistent theory of
quantum gravity. An idea that has transformed the field, and occupied center stage
during the past two decades, is to consider the black hole horizon as a holographic
screen on which the black hole interior is recorded.
more...
19.5.2023 17:00
Prof. Raju Venugopalan, EIC Theory Institute, Physics Department,
Brookhaven National Lab, New York &
Adjunct Professor, Stony Brook University
Stony Brook, NY KIP, INF 227, Hörsaal 1
On this 50th anniversary year of QCD, confinement remains the metaphorical elephant
in the standard model, tamed, yet elusive in essence. Fresh insight can be gained
from the many-body dynamics of infrared wee partons revealed at high energies.
Though apparently extremely complex, key features of this “buzz” of wee partons are
captured by emergent semi-classical lumpy structures of dense gluons described by
the Color Glass Condensate (CGC) effective field theory. The CGC provides a
common framework to explore multi-particle final states at collider energies and in
particular provides a sophisticated understanding of the process of thermalization in
heavy-ion collisions.
more...
26.5.2023 17:00
KIP, INF 227, Hörsaal 1
The James Webb Space Telescope (JWST, or Webb), a joint NASA, ESA and CSA
mission, was launched on Christmas 2021 and is the largest, most powerful and
complex space telescope. It is an orbiting infrared observatory that complements and
extends the discoveries of the Hubble Space Telescope, with longer wavelength
coverage and greatly improved sensitivity. The longer wavelengths enable JWST to
look much closer to the beginning of time and to hunt for the unobserved formation of
the first galaxies.
more...
2.6.2023 17:00
Prof. Dr. Michael Kramer, Director - Max-Planck-Institut für Radioastronomie, Bonn, Germany, Professor for Astrophysics - University of Manchester, UK, Professor (Hon-Prof.) - University of Bonn, Germany KIP, INF 227, Hörsaal 1
We experience a golden era in testing and exploring relativistic gravity. There is an
unparalleled access to experimental data that allow us to pursue the question, as to
whether Einstein’s theory of gravity is our last word in our understanding of gravity.
Besides results from gravitational wave detectors, satellite or lab experiments, radio
astronomy plays an important complementary role - whether it is the cosmic
microwave background, black hole imaging or, obviously, binary pulsars.
more...
9.6.2023 17:00
Prof. Dr. Markus Rex, Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung, Potsdam KIP, INF 227, Hörsaal 1
Es war die größte Artkisexpedition jemals. Im Oktober 2019 ließ sich der
Forschungseisbrecher Polarstern fest in das arktische Meereis einfrieren, um nur mit
der Kraft der natürlichen Eisdrift ein ganzes Jahr durch die zentrale Arktis zu driften.
Unterstützt von sechs weiteren Schiffen sowie Flugzeugen und Hubschraubern ist
dabei erstmals die direkte Umgebung des Nordpols im Winter mit einem modernen
Forschungseisbrecher erreicht worden.
more...
16.6.2023 17:00
KIP, INF 227, Hörsaal 1
Festkolloquium zum 80. Geburtstag von Prof. Dr. Otto Nachtmann
Despite many decades of intense study, our knowledge about the internal structure of
the proton remains incomplete in many respects. At a scale of 0.1 femtometers or
less, the proton is a strongly bound, highly relativistic dynamical system, and
producing 'images' of such a system is a conceptual and experimental challenge. A
programme of three-dimensional proton imaging has been devised since the turn of
the century, and experimental prospects to realise it, have received a strong boost
with the planning of an Electron-Ion Collider in the United States.
more...
23.6.2023 17:00
KIP, INF 227, Hörsaal 1
When particles are part of a many-body system, they can change their properties due
to their interaction with the surrounding medium. The particles become dressed by
excitations of the medium and new collective states of matter are formed. In this state
of matter, the particles turn into quasiparticles, sometimes called polarons, that can
share much similarity with the original particles.
more...
30.6.2023 17:00
KIP, INF 227, Hörsaal 1
Digitale Computer, die Informationen in Form von Bits darstellen, haben sich über viele
Jahre hinweg in beispielloser Weise weiterentwickelt und sind in unserem Leben
allgegenwärtig geworden. Heute stoßen diese klassischen, auf Miniaturisierung basierenden
Technologien an ihre Grenzen, und es werden neue Rechenparadigmen gesucht, um den
Stromverbrauch zu senken und die Rechenleistung zu erhöhen. Zwei neue Ansätze haben in
den letzten Jahren enorme Fortschritte gemacht.
more...
7.7.2023 17:00
Talk will be transmitted via Zoom to HS1, KIP INF227
For many decades, the running joke in fusion research has been that `fusion’ is twenty
years away and always will be. Yet, this year we find ourselves in a position where we
can talk about the milestones of burning plasmas, fusion ignition, and target energy
gain greater than unity in the past tense – a situation that is remarkable!
more...
14.7.2023 17:00
KIP, INF 227, Hörsaal 1
The computational resources required to describe the full state of a quantum many-body
system scale exponentially with the number of constituents. This severely limits our ability to
explore and understand the fascinating phenomena of quantum systems using classical
algorithms. Quantum simulation offers a potential route to overcome these limitations. The
idea is to build a well-controlled quantum system in the lab, which represents the problem of
interest and whose properties can be studied by performing controlled measurements.
more...
21.7.2023 17:00
KIP, INF 227, Hörsaal 1
Laser powered, plasma based accelerators where electrons surf on waves and can reach multi-
GeV energy levels in a few 10’s of cm that, if one relies on conventional methods, would
require machines multiple football fields long. Although many challenges remain, this new
technology is at the brink of offering a profoundly different way in which we may build particle
accelerators.
more...