Thursday, 26 September, 2019
Marcos Marino, Tomas Reis

In integrable field theories in two dimensions, the Bethe ansatz can be used to compute exactly the ground state energy in the presence of an external field coupled to a conserved charge. We...

Wednesday, 25 September, 2019
Tobias Diez, Tudor S. Ratiu

Given a closed surface endowed with a volume form, we equip the space of compatible Riemannian structures with the structure of an infinite-dimensional symplectic manifold. We show that the...

Friday, 20 September, 2019
Tudor S. Ratiu, Nguyen Tien Zung

The main purpose of this paper is to investigate commuting flows and integrable systems on the configuration spaces of planar linkages. Our study leads to the definition of a natural volume form...

Wednesday, 18 September, 2019
Domenico Orlando, Susanne Reffert, Francesco Sannino

We investigate four-dimensional near-conformal dynamics by means of the large-charge limit. We first introduce and justify the formalism in which near-conformal invariance is insured by adding a...

Thursday, 12 September, 2019
Jonas Allemann, Norbert Hungerbühler, Micha Wasem

We obtain a formula for the number of horizontal equilibria of a planar convex body K with respect to a center of mass O in terms of the winding number of the evolute of \partial K with respect...

Tuesday, 10 September, 2019
Jean-Pierre Eckmann, Farbod Hassani

We study the sensitivity of the computed orbits for the Kepler problem, both for continuous space, and discretizations of space. While it is known that energy can be very well preserved with...

Thursday, 5 September, 2019
Louis-Hadrien Robert, Emmanuel Wagner

We provide a finite dimensional categorification of the symmetric evaluation of \mathfrak{sl}_N-webs using foam technology. As an output we obtain a symmetric link homology theory categorifying...

Thursday, 5 September, 2019
Louis-Hadrien Robert, Emmanuel Wagner

Using a modified foam evaluation, we give a categorification of the Alexander polynomial of a knot. We also give a purely algebraic version of this knot homology which makes it appear as the...

Thursday, 5 September, 2019
Louis-Hadrien Robert, Emmanuel Wagner

We present state sums for quantum link invariants arising from the representation theory of U_q(\mathfrak{gl}_{N|M}). We investigate the case of the N-th exterior power of the standard...

Thursday, 5 September, 2019
Luis Alvarez-Gaume, Domenico Orlando, Susanne Reffert

We apply the large-charge expansion to O(N) vector models starting from first principles, focusing on the Wilson-Fisher point in three dimensions. We compute conformal dimensions at zero and...

Tuesday, 3 September, 2019
Gil Badel, Gabriel Cuomo, Alexander Monin, Riccardo Rattazzi

We study the scaling dimension \Delta_{\phi^n} of the operator \phi^n where \phi is the fundamental complex field of the U(1) model at the Wilson-Fisher fixed point in d=4-\varepsilon. Even for...

Tuesday, 27 August, 2019
Nikolay Gromov, Amit Sever

Recently, we constructed the first-principle derivation of the holographic dual of N=4 SYM in the double-scaled γ-deformed limit directly from the CFT side. The dual fishchain model is a novel...