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Calendar of Physics Talks Vienna
| Computational Solutions to the Many-Body Schrödinger Equation Using High-Performance Computing (Vienna Theory Lunch Seminar) |
| Speaker: | Andreas Irmler (TU Wien ) |
| Abstract: | Despite being studied for over a decade solving the electronic Schroedinger equation exactly for systems with more than a few electrons remains a significant challenge. In this presentation, I will discuss why obtaining sufficiently accurate solutions is inherently complex and why such solutions are still urgently needed. To address this, I will introduce the Coupled Cluster method, a powerful approach that reformulates the problem into an algebraic framework. Additionally, I will demonstrate how the resulting equations can be efficiently solved using supercomputing techniques.
[[part of the "Vienna Theory Lunch Seminar, see https://lunch-seminar.univie.ac.at ]] |
| Date: | Tue, 22.10.2024 |
| Time: | 12:30 |
| Duration: | 75 min |
| Location: | TU Wien: Wiedner Hauptstr. 8-10, yellow area, 10th floor, seminar room DB10E11 |
| Contact: | Florian Lindenbauer |
| Mirror Symmetry and the Dualization Algorithm |
| Speaker: | Fabio Marino (University of Vienna) |
| Abstract: | Mirror symmetry is an IR duality enjoyed by some supersymmetric QFTs realized in type IIB superstring theory and, as such, it is usually presented at the branes level. However, there is a procedure known as the âdualization algorithmâ which allows us to implement mirror symmetry directly at the QFT level.
In this talk I will try to illustrate where does this technique come from, how does it work and which are the outstanding results it can provide. In particular, I will first put it to work on the simple example provided by good SQCD, in order to get some intuition, and then to the quite intricate case of the so called âbadâ SQCD.
Here we will se arising a very interesting feature: bad theories have a partition function which behaves as a sum of distribution rather than a regular function of the deformation parameters. |
| Date: | Tue, 22.10.2024 |
| Time: | 14:00 |
| Duration: | 60 min |
| Location: | Erwin-Schroedinger-Hoersaal, 1090 Vienna, Boltzmanngasse 5, 5th floor |
| Contact: | S. Fredenhagen, M. Sperling |
| Factorization restoration through Glauber gluons, Part 1 |
| Speaker: | Matthias Neubert (University of Mainz) |
| Abstract: | I will discuss new insights into the low-energy dynamics of gap-between-jets cross sections at hadron colliders, for which phase factors in the hard amplitudes spoil collinear cancellations and lead to double (âsuper- leadingâ) logarithmic behavior. Based on a method-of-regions analysis, we have identified three-loop contributions from perturbative active-active Glauber-gluon exchanges with the right structure to render the cross section consistent with PDF factorization below the gap veto scale. These Glauber contributions are unambiguously defined without regulators beyond dimensional regularization. |
| Date: | Tue, 22.10.2024 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | Erwin-Schroedinger-HS, Boltzmanngasse 5, 1090 Wien, 5.Stock |
| Contact: | A. Hoang, M. Procura |
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