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Calendar of Physics Talks Vienna
| The Higgs boson as Inflaton |
| Speaker: | Prof. Fred Jegerlehner (Humboldt-Universität zu Berlin) |
| Abstract: | The Higgs has been discovered to have a very peculiar mass value, which,
depending on some technical details in calculating MSbar parameters in
terms of physical ones, allows the Standard Model to work up to the Planckscale. This requires the Higgs potential to remain stable. If so,
it turns out that the bare Higgs mass square changes sign at some value
below the Planck scale. Assuming that the SM is a low energy effective
theory ofsome cutoff system residing at the Planck scale, the bare
parameters arethe ones relevant at very high energies as they existed
in the early universe after the Big Bang. The change of sign of the bare Higgs mass
square triggers the Higgs mechanism. The broken phase characterized by
a non-vanishing Higgs vacuum expectation value is realized below the Higgstransition temperature, while in the very early universe the SM is
in the symmetric phase, ..... |
| Date: | Tue, 05.05.2015 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | A. Hoang, H. Neufeld |
| Double Field Theory and the Non-relativistic String |
| Speaker: | Charles Melby-Thompson (Tokyo U., IPMU) |
| Date: | Wed, 06.05.2015 |
| Time: | 16:00 |
| Duration: | 60 min |
| Location: | SEM 136, TU Wien, Freihaus, 10th floor (Wiedner Hauptstr. 8-10, A-1040 Vienna) |
| Contact: | Daniel Grumiller and Johanna Knapp |
| Riemannian geometry of the diffeomorphism group |
| Speaker: | Martin Bruveris (Brunel University London) |
| Abstract: | Seminars in Geometric Analysis and Physics (GAP Seminar): This talk
will survey the relationship between right-invariant Riemannian metrics
on the diffeomorphism group and PDEs. We will concentrate in particular
on Euler's equations for incompressible fluids, which correspond to
geodesics on the volume-preserving diffeomorphism group. Afterwards we
will concentrate on some mathematical result about the Riemannian
geometry of diffeomorphism groups with Sobolev metrics, in particular
completeness results. |
| Date: | Thu, 07.05.2015 |
| Time: | 11:00 |
| Duration: | 60 min |
| Location: | Arbeitsgruppe Gravitation, Währinger Strasse 17, Seminarraum Kernphysik, 5. Stock, 1090 Wien |
| Contact: | M. Bauer (Fak. Math, U.V.), V. Branding (Fak. Math, T.U.), D. Fajman (Fak. Phys, U.V.), J. Joudioux (Fak. Phys, U.V.) |
| Minimal surfaces, isoperimetry, and non-negative scalar curvature in asymptotically flat manifolds |
| Speaker: | Michael Eichmair (Vienna) |
| Abstract: | im Rahmen des Literaturseminars: It is a classical observation that geodesic balls at points of positive scalar curvature contain
more volume than a round ball in Euclidean space with the same surface area. In this talk,
I will discuss the global effect of non-negative scalar curvature on isoperimetry in asymptotically
flat manifolds.
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| Date: | Thu, 07.05.2015 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Arbeitsgruppe Gravitation, Währinger Strasse 17, Seminarraum A, 2. Stock, 1090 Wien |
| Contact: | P.T. Chrusciel |
| BiGalois objects and the Brauer Picard group |
| Speaker: | Simon Lentner (Uni Hamburg) |
| Abstract: | I will explain the notion of a Hopf-Galois and -BiGalois object, which can be used to describe monoidal autoequivalences of representations categories of Hopf algebras. As an example I will show some curious occurrences in the category of representations of a finite group. Then I will talk about my recent work on trying to determine the group of braided autoequivalences for the Drinfel'd double of a finite group and hence the Brauer Picard group. This work should have applications in Dijkgraaf Witten type Topological Field Theories.
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| Date: | Thu, 07.05.2015 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | ESI (kleiner Hörsaal) |
| Contact: | Nils Carqueville |
| BMS symmetries in three dimensions |
| Speaker: | Blagojevic Oblak (Brussels U.) |
| Date: | Thu, 07.05.2015 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | SEM 136, TU Wien, Freihaus, 10th floor (Wiedner Hauptstr. 8-10, A-1040 Vienna) |
| Contact: | Daniel Grumiller and Johanna Knapp |
| Holographic Superconductors in Helical Backgrounds and Homes' Law |
| Speaker: | Rene Meyer (Tokyo U., IPMU) |
| Date: | Thu, 07.05.2015 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | SEM 136, TU Wien, Freihaus, 10th floor (Wiedner Hauptstr. 8-10, A-1040 Vienna) |
| Contact: | Daniel Grumiller and Johanna Knapp |
| Speaker: | Eric Bergshoeff (Groningen U.) |
| Date: | Fri, 08.05.2015 |
| Time: | 10:00 |
| Duration: | 60 min |
| Location: | SEM, TU Wien, Freihaus, yellow tower, 3rd floor (Wiedner Hauptstr. 8-10, A-1040 Vienna) |
| Contact: | Daniel Grumiller and Johanna Knapp |
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