|
Calendar of Physics Talks Vienna
| From BV to string theory and back |
| Speaker: | Ivo Sachs (LMU München ) |
| Abstract: | This is the first instalment of a series of online seminars jointly organised by the theoretical/mathematical physics groups at the universities of Heidelberg, Munich and Vienna. Future seminars of this series will also start at 4:15 pm on Mondays. |
| Date: | Mon, 11.05.2020 |
| Time: | 16:15 |
| Duration: | 60 min |
| Location: | https://bbb.nt.tuwien.ac.at/b/nil-62h-f4a, open from 4:00 pm |
| Contact: | Nils Carqueville |
| On string theory on AdS3 x M7 in the tensionless limit |
| Speaker: | Gaston Giribet (University of Buenos Aires) |
| Abstract: | In this talk I will review old and recent results on a special limit of string theory on AdS3 x M7 with pure NS-NS fluxes: the limit in which the string length (l_s) equals the AdS3 radius (R). At this point of the moduli space, the theory exhibits special properties, which I will discuss. Special attention will be focused on features of correlation functions that are related to the non-compactness of the boundary CFT target space, and on how these features change when the point l_s=R is approached. Also, we briefly review recent proposals for exact realizations of AdS/CFT correspondence at this special point.
|
| Date: | Tue, 12.05.2020 |
| Time: | 13:45 |
| Duration: | 60 min |
| Location: | Zoom |
| Contact: | S. Fredenhagen, D. Grumiller |
| Scale separation, Swampland, and type IIA orientifold vacua |
| Speaker: | Eran Palti (MPI Munich) |
| Abstract: | I will introduce the Swampland program which aims to capture constraints on which effective theories can be completed into quantum gravity in the UV. I will then discuss such a proposed constraint which states that effective theories in anti-de Sitter space must have an infinite tower of states whose mass is related to the cosmological constant. I will describe how this is satisfied in almost all fully understood vacua of string theory. I will then focus on a proposed counter example to the conjecture based on four-dimensional effective theories from
compactifications of type IIA string theory. I will present recent results on testing such counter examples by studying whether they can be uplifted to full ten-dimensional solutions or not. In particular, presenting a ten-dimensional solution which holds at the two-derivative level and at first order in a certain perturbative expansion. |
| Date: | Thu, 14.05.2020 |
| Time: | 16:00 |
| Duration: | 60 min |
| Location: | Zoom (contact D. Andriot or I. Lovrekovic to get the link) |
| Contact: | David Andriot |
|