Sunday, 14 April, 2019
Anton Alekseev, Elizaveta Arzhakova, Daria Smirnova

The celebrated result by Biane-Bougerol-O'Connell relates Duistermaat-Heckman (DH) measures for coadjoint orbits of a compact Lie group G with the multi-dimensional Pitman transform of the...

Friday, 12 April, 2019
Seung-Joo Lee, Wolfgang Lerche, Timo Weigand

We systematically analyse weak coupling limits for 2-form tensor fields in the presence of gravity. Such limits are significant for testing various versions of the Weak Gravity and Swampland...

Tuesday, 2 April, 2019
Lorenz Eberhardt, Matthias R. Gaberdiel

String theory on {\rm AdS}_3 \times {\rm S}^3 \times {\rm S}^3 \times {\rm S}^1 with pure NS-NS flux and minimal flux through one of the two {\rm S}^3's is studied from a world-sheet perspective...

Thursday, 28 March, 2019
Anna Beliakova, Hatthew Hogancamp, Krzysztof Karol Putyra, Stephan Martin Wehrli

We construct an explicit equivalence between the (bi)category of gl(2) webs and foams and the Bar-Natan (bi)category of Temperley-Lieb diagrams and cobordisms. With this equivalence we can fix...

Monday, 25 March, 2019
Nikolay Gromov, Amit Sever

We present the first-principle derivation of a weak-strong duality between the fishnet theory in four dimensions and a discretised string-like model living in five dimensions. At strong coupling...

Thursday, 21 March, 2019
Michele Maggiore, B.S. Sathyaprakash, Enis Belgacem, Stefano Foffa , Daniele Bertacca & al.

This Astro-2020 White Paper deals with what we might learn from future gravitational wave observations about the early universe phase transitions and their energy scales, primordial black holes...

Thursday, 21 March, 2019
Dragos Oprea, Rahul Pandharipande

We compute tautological integrals over Quot schemes on curves and surfaces. After obtaining several explicit formulas over Quot schemes of dimension 0 quotients on curves (and finding a new...

Saturday, 16 March, 2019
Abraham Berman, Franziska Borer, Norbert Hungerbühler

We model the Lights Out game on general simple graphs in the framework of linear algebra over the field \mathbb F_2. Based upon a version of the Fredholm alternative, we introduce a separating...

Monday, 11 March, 2019
Alberto S. Cattaneo, Tatsuro Shimizu

In this note, we revisit the Θ-invariant as defined by R. Bott and the first author. The Θ-invariant is an invariant of rational homology 3-spheres with acyclic orthogonal local systems, which...

Thursday, 7 March, 2019
Tarek Anous, Julian Sonner

We use the monodromy method to compute expectation values of an arbitrary number of light operators in finitely excited ("heavy") eigenstates of holographic 2D CFT. For eigenstates with scaling...

Friday, 1 March, 2019
Pranjal Nayak, Julian Sonner, Manuel Vielma

The Sachdev-Ye-Kitaev (SYK) model provides an uncommon example of a chaotic theory that can be analysed analytically. In the deep infrared limit, the original model has an emergent conformal (...

Friday, 1 March, 2019
Lorenz Eberhardt, Matthias R. Gaberdiel

For string theory on AdS3 with pure NS-NS flux a complete set of DDF operators is constructed, from which one can read off the symmetry algebra of the spacetime CFT. Together with an analysis of...