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Till Bargheer

I am a researcher in the Institute for Theoretical Physics at Hannover University, and a long-term visitor at the Theory Group of DESY Hamburg.


Hannover DESY

Till Bargheer

ITP Hannover
Appelstraße 2
30167 Hannover, Germany

Room 222 (3701)

till.bargheer@itp.uni-hannover.de (PGP key)

spin chain


My research focuses on two complementary topics: Integrability in gauge and string theory, and mathematical structures of scattering amplitudes. Both are very active areas of research that hold the promise to substantially improve our understanding of gauge theory at a fundamental level. The newly developed methods radically depart from traditional Lagrangian descriptions, thus admitting unprecedented analytic access to observables in interacting gauge theory at weak, strong, and intermediate couplings.



arxiv:1711.05326, (PDF)

Handling Handles I: Nonplanar Integrability

arxiv:1701.04424, (PDF)

Four-Point Functions with a Twist

arxiv:1606.07640, (PDF)

Systematics of the Multi-Regge Three-Loop Symbol

arxiv:1512.07620, (PDF)

The Two-Loop Symbol of All Multi-Regge Regions

arxiv:1407.4449, (PDF)

Integrable Amplitude Deformations for N=4 Super Yang--Mills and ABJM Theory

arxiv:1311.7461, (PDF)

Computing Three-Point Functions for Short Operators

arxiv:1204.4406, (PDF)

Conformal Anomaly for Amplitudes in N=6 Superconformal Chern-Simons Theory

arxiv:1203.0562, (PDF)

New Relations for Three-Dimensional Supersymmetric Scattering Amplitudes

arxiv:1104.0700, (PDF)

Exact Superconformal and Yangian Symmetry of Scattering Amplitudes

arxiv:1003.6120, (PDF)

Symmetries of Tree-level Scattering Amplitudes in N=6 Superconformal Chern-Simons Theory

arxiv:0905.3738, (PDF)

Exacting N=4 Superconformal Symmetry

arxiv:0902.0956, (PDF)

Long-Range Deformations for Integrable Spin Chains

arxiv:0807.5081, (PDF)

Boosting Nearest-Neighbour to Long-Range Integrable Spin Chains

arxiv:0804.0324, (PDF)

Quantum Stability for the Heisenberg Ferromagnet

Talks and Posters

Here is a selection of presentations that I have given, with links to slides, notes, and posters.


May 2018: “Workshop on Correlation Functions in Solvable Models”, Nordita, Stockholm


April 2018: “Workshop on higher-point correlation functions and integrable AdS/CFT”, Trinity College Dublin

March 2018: Seminar at ETH Zürich

March 2018: “Workshop on holography, gauge theories and black holes”, University of Southampton

March 2018: Journal Club and joint Seminar at Brussels (ULB, VUB) / KU Leuven / U Mons, Belgium


May 2017: Workshop “Scattering Amplitudes: from Gauge Theory to Gravity”, KITP, Santa Barbara


July 2016: Workshop “Classical and Quantum Symmetries in Mathematics and Physics”, Jena


December 2014: Workshop “Graßmannian Geometry of Scattering Amplitudes”, Caltech


November 2014: Seminar at the Simons Center for Geometry and Physics


July 2014: Conference “Integrability in Gauge and String Theory”, DESY Hamburg


May 2012: Seminar at ETH Zurich


March 2011: Nordic Network Meeting at the Niels Bohr International Academy, Kopenhagen


November 2009: Seminars at Uppsala University, Nordita, and ENS Paris

poster, poster, poster

June 2009: Conference “Integrability in Gauge and String Theory”, Potsdam


June 2009: Mathematica Summer School in Porto, Portugal


June 2008: Conference on Integrable Systems and Quantum Symmetries, Prag, Czech Republic


February 2008: Nordic String Meeting in Potsdam, Germany


(last updated on May 18, 2018)

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