Birdtracks 2024

26 Feb 2024, 13:00 → 28 Feb 2024, 18:00 Europe/Vienna

Online

The birdtracks method allows for a concise and transparent way of calculating with tensors, with applications that reach across QCD, general relativity, differential geometry, lattice field theory, and representation theory. The aim of this meeting is to bring together experts from different fields, who will explain in which context they use birdtracks, why they use them, and what the special features, advantages, and disadvantages are in their particular context. In this way, the meeting will allow exchange, progress, and synergy across different fields of research.

Confirmed speakers include: Predrag Cvitanović (Georgia Institute of Technology), Anthony Kennedy (The University of Edinburgh), Rob Pisarski (Brookhaven National Laboratory), Andreas Trautner (Max-Planck-Institut für Kernphysik, Heidelberg), Heribert Weigert (University of Cape Town) and Torsten Zache (University of Innsbruck).

The meeting is jointly organized by Stefan Keppeler (Universität Tübingen), Simon Plätzer (Universität Graz and Universität Wien) and Malin Sjödahl (Lund University).

   

Monday 26 February

1 Welcome and introduction

2 A brief history of doodling

A version of the talk can be found on Youtube, see https://www.youtube.com/watch?v=Bs798oBBTSY

Speaker: Predrag Cvitanović

3 Discussion

14:00 Break and open discussion

4 Physics use cases: (Colour) evolution, ...

Speaker: Simon Plätzer

slides-reduced.pdf

5 Discussion

15:00 Break and open discussion

6 Parametrizing Wilson Line Correlators

Speaker: Heribert Weigert

Birdtracks-workshop-2024.pdf

7 Discussion

16:00 Break and open discussion

8 Using Schur-Weyl duality and Yamanouchi words to compute SU(n) Wigner coefficients more efficiently

Speaker: Anthony Kennedy

Presentation2.pdf

9 Discussion

Tuesday 27 February

10 All you need is 6js ... and a little bit of chirality flow

Speaker: Malin Sjödahl

Birdtracks24MalinSjodahl.pdf

11 Discussion

13:50 Break and open discussion

12 Spinography: everything you wanted to know (and more) about Clifford algebras and Pin

Speaker: Anthony Kennedy

Spinography.pdf

13 Discussion

14:50 Break and open discussion

14 How I Learned to Stop Worrying and Love Birdtrack Projection Operators

Speaker: Andreas Trautner

Birdtracks_24.pdf

15 Discussion

Wednesday 28 February

16 How bird tracks help to construct a matrix model for the deconfining phase transition

Speaker: Robert Pisarski

birdtrack.pdf

17 Discussion

13:50 Break and open discussion

18 Constructing generalized Hamiltonian lattice gauge theories using a graphical calculus

Speaker: Torsten Zache

GeneralizedLGTsBirdtracks.pdf

19 Discussion

14:50 Break and open discussion

20 Birdtacks to the Future

Discussion session