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Thursday, 31 Oct 2024 |
Video-Recording for any system with MP4-support - Video.mp4 (ca. 414 Mb) |
15:30 – 16:40 |
Oskar Klein
Memorial Lecture 2024:
"Attractors in Black Holes and Cosmology"
Prof.
Renata E. Kallosh
(Stanford University)
Abstract:
The concept of attractors, well-known in
classical mechanics, proved very productive
in the theory of black holes and
inflationary cosmology. I will start with attractors in supersymmetric black
holes and discuss how the discovery of Kaluza-Klein black hole
attractors helped recently to explain the
mysterious cancellation of ultraviolet
divergences in 82 Feynman diagrams in
4-loop superamplitude in N=5 supergravity.
I will also describe inflationary alpha-attractors.
This large class of inflationary models
gives predictions that are stable with
respect to even very significant modifications of inflationary potentials.
These predictions match all presently available CMB-related cosmological data.
Some of these models have a Kaluza-Klein origin and provide targets
for the future satellite mission LiteBIRD,
which will attempt to detect primordial
gravitational waves. I will show that
potentials in some of the recent advanced
versions of cosmological attractors have a
beautiful fractal landscape structure.
The lecture is sponsored by the Royal
Swedish Academy of Sciences through its
Nobel Institute for Physics, and by
Stockholm University.
In honour of the memory of Oskar Klein, the
Organizing Committee of the Oskar Klein Memorial Lectures every year invites a
distinguished researcher to give a
Memorial Lecture and to receive the Klein
medal.
Magdalena Larfors
Niels Obers
Bo Sundborg
Magdalena Zych