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Calendar of Physics Talks Vienna
| Speaker: | Raphael Holzinger (Univ. Wien) |
| Abstract: | im Rahmen des Seminars für Mathematische Physik: We discuss fuzzy C
P^2, which is a basic example of a 4-dimensional compact quantized
symplectic space embedded in R^8. The construction in terms of 3
harmonic oscillator algebras and the relation with representations
of SU(3) is reviewed.
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| Date: | Tue, 09.12.2014 |
| Time: | 14:15 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | H. Steinacker |
| Phenomenology of scenarios with flavor and CP symmetries |
| Speaker: | Claudia Hagedorn (TU München) |
| Abstract: | im Rahmen des Teilchenphysikseminars: I consider a theory (for leptons)
with a flavor and a CP symmetry. First, I discuss that the choice of
these symmetries is subject to certain constraints. Then, I show that
lepton mixing angles as well as the Dirac and the Majorana phases can
be predicted in terms of quantities determined by the symmetries of the
theory and only one continuous parameter, if these symmetries are
broken to residual ones in the charged lepton and neutrino sector. The
predictive power of this approach is exemplified with the flavor groups
Delta (6 n^2). Furthermore, I study neutrinoless double beta decay in
such a theory. |
| Date: | Tue, 09.12.2014 |
| Time: | 16:15 |
| Location: | Fakultät für Physik, Erwin-Schrödinger-Hörsaal, Boltzmanngasse 5, 5. Stock |
| Contact: | A. Hoang, W. Grimus |
| Environment Induced Entanglement in Mesoscopic Systems |
| Speaker: | Federico Carollo (University of Trieste) |
| Abstract: | Mini-Symposium - "On Entanglement" |
| Date: | Wed, 10.12.2014 |
| Time: | 13:00 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Kleiner Seminarraum, 5. Stock, Boltzmanngasse 5, 1090 Wien |
| Contact: | B. Hiesmayr, H. Narnhofer |
| Genuine Multipartite Entanglement in XY & Cluster-Ising Models and Quantum Frustration |
| Speaker: | Marco Giampaolo (University of Vienna) |
| Abstract: | Mini-Symposium - “On Entanglement” |
| Date: | Wed, 10.12.2014 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Fakultät für Physik, Kleiner Seminarraum, 5. Stock, Boltzmanngasse 5, 1090 Wien |
| Contact: | B. Hiesmayr, H. Narnhofer |
| Global dynamics of a Yang-Mills field on an asymptotically hyperbolic space |
| Speaker: | Patryk Mach (Cracow) |
| Abstract: | im Rahmen des Literaturseminars für Gravitationsphysik: We consider
a spherically symmetric (purely magnetic) SU(2) Yang-Mills field
propagating on an ultrastatic spacetime with two asymptotically
hyperbolic regions connected by a throat of radius α. Static solutions
in this model are shown to exhibit an interesting bifurcation pattern
in the parameter α. We relate this pattern to the Morse index of the
static solution with maximal energy. Using a hyperboloidal approach to
the initial value problem, we describe the relaxation to the ground
state solution for generic initial data and unstable static solutions
for initial data of codimension one, two, and three.
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| Date: | Thu, 11.12.2014 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Arbeitsgruppe Gravitation, Währinger Strasse 17, Seminarraum A, 2. Stock, 1090 Wien |
| Contact: | P.T. Chrusciel |
| Chern-Simons-like Theories of Gravity |
| Speaker: | Wout Merbis (TU Wien) |
| Abstract: | I will discuss how a wide class of three-dimensional massive gravity
models can be brought in a first-order, Chern-Simons-like,
formulation. This allows for a general analysis of the Hamiltonian
for this wide class of models. From the Chern-Simons-like
perspective, the known higher-derivative theories of 3D massive
gravity, like Topologically Massive Gravity and New Massive Gravity,
can be extended to a wider class of models. These models are shown to
be free of (possibly ghost-like) scalar excitations and exhibit
improved behavior with respect to Anti-de Sitter holography; the new
models have regions in their parameter space where positive boundary
central charge is compatible with positive mass and energy for the
massive spin-2 mode. |
| Date: | Thu, 11.12.2014 |
| 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 |
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