Conveners
Parallel Session: String & Mathematical Physics
- Elli Pomoni
Stijn van Tongeren
(HU Berlin)
27/09/2017, 16:05
String & Mathematical Physics
Strings moving in symmetric spaces are integrable models and can be ``solved'' exactly. Such strings play an important role in furthering our understanding of the AdS/CFT correspondence. In recent years many further integrable string theories were discovered, based on deformations of symmetric space strings. I will give an overview of these integrable models, their interpretation in terms of...
Rob Klabbers
(Univ. of Hamburg)
27/09/2017, 16:25
String & Mathematical Physics
I will report on the construction of the Quantum Spectral Curve (QSC) for the eta-deformation of the AdS_5 x S^5 superstring. The Quantum Spectral Curve is a very simple set of equations and boundary conditions that describe the spectrum of the deformed string theory. It can be regarded as a trigonometrisation of the QSC that formed the ultimate simplification of the spectral problem of the...
Reimar Hecht
(ETH Zurich)
27/09/2017, 16:45
String & Mathematical Physics
Beisert's S-matrix was fixed by centrally extended sl(2|2) symmetry. Here we examine q-deformed centrally extended sl(2|2) and its sl(2) automorphisms for which we obtain the Hopf structure and the universal R-matrix. In addition, we consider this algebra as a contraction limit of the exceptional Lie superalgebra d(2,1,\alpha). This is closely related to 3D kappa-Poincaré for which we find a...
Robin Brueser
(Univ. Mainz)
27/09/2017, 17:05
String & Mathematical Physics
We study massive scattering amplitudes in N=4 super-Yang-Mills in the planar limit, where the mass is generated through a Higgs mechanism. The scattering amplitudes we consider are those of massless gauge bosons interacting through loops of massive W bosons. In such a model it is known that at leading power, both the Regge limit, as well as the soft divergences are controlled by the anomalous...
Dennis Müller
(HU Berlin)
27/09/2017, 17:25
String & Mathematical Physics
We consider an all-loop conformal Yangian symmetry of
four-dimensional fishnet Feynman integrals being built from four-valent
vertices which are connected via scalar massless propagators. We will
discuss the implications of the Yangian symmetry in terms of
differential equations for these graphs and also comment on their
relation to observables in an integrable bi-scalar field theory...
