Projects (33)
Algorithms for lattice QCD and related models
Hasenbusch, Martin, (Theoretical Physics / Phenomenology of Elementary Particles beyond the Standard Model)
Duration of Project: 10/2016  09/2018
Financer: DFG: Eigene Stelle (Sachbeihilfe)Die GitterQCD ist die etablierte Methode für theoretische Berechnungen zur starken Wechselwirkung jenseits der Störungstheorie. Um qualitative Resultate zu erhalten, werden aufwendige MonteCarloSimulationen durchgeführt. Die GitterQCD hat sich in ...
CRC 647/1: Conformal Symmetry, Supergravity, and the AdS/CFT Correspondence (SP A06)
Plefka, Jan, Prof. Dr. (Collaborative Research Centre 555 'Complex Nonlinear Processes')
Duration of Project: 10/2006  09/2008
Financer: DFG: SonderforschungsbereichDie Antide Sitter/Conformal Field TheoryKorrespondenz verbindet Gravitationstheorien, die mit differentialgeometrischen Methoden behandelt werden können, mit Quantenfeldtheorien und der Struktur der Elementarteilchen. In diesem Projekt soll diese w ...
CRC 647/1: Evolution of Geometrical Structures in Classical and Quantum Cosmology (SP B05)
Plefka, Jan, Prof. Dr. (Collaborative Research Centre 555 'Complex Nonlinear Processes')
Duration of Project: 10/2006  12/2008
Financer: DFG: SonderforschungsbereichIn dem Projekt soll das Zusammenspiel zwischen StringTheorie, SchleifenQuantenGravitation und kosmologischer Feldtheorie untersucht werden. Dabei spielen verschiedene Fragestellungen eine Rolle, die sowohl von der klassischen wie von der QuantenS ...
CRC 647/2–3: Integrable Structures in the Gauge/String Theory Correspondence (SP B08/C05)
Plefka, Jan, Prof. Dr. (Theoretical Physics / Quantum Field Theory beyond the Standard Model and String Theory)
Duration of Project: 01/2009  12/2016
Financer: DFG: SonderforschungsbereichEstablishing dualities between string and gauge theories is considered to be one of the most important directions of research in mathematical physics. Recent years have seen key advances in uncovering exactly integrable observables in the most promin ...
CRC 647/2–3: Tests and Applications of the AdS/CFT Correspondence (SP A08/C06)
Plefka, Jan, Prof. Dr. (Theoretical Physics / Quantum Field Theory beyond the Standard Model and String Theory)
Duration of Project: 01/2009  12/2016
Financer: DFG: SonderforschungsbereichThe project is devoted to tests and applications of the correspondence between gauge field theories and string theories (AdS/CFT). The main emphasis will be on the following topics: Analysis of new relations between strings and observable quantities ...
DAAD PRIME Fellowship: Johannes Thürigen (2016–2018)
Kreimer, Dirk, Prof. (Theoretical Physics / Mathematical Physics)
Duration of Project: 09/2016  06/2018
Financer: DAAD
Tischendorf, Caren, Prof. Dr. (Applied Mathematics)
Duration of Project: 01/2014  12/2016
Financer: DFG: SachbeihilfeThe project aims at the exploration of quasi Monte Carlo (QMC) methods for applications in Euclidean quantum field theory and statistical mechanics. We plan to explore and construct efficient effectivedimension reduction techniques based on derivati ...
DFG Research Grant: Gauge Dependence and DysonSchwinger Equations
Kreimer, Dirk, Prof. (Theoretical Physics / Mathematical Physics)
Duration of Project: 10/2017  12/2019
Financer: DFG: SachbeihilfeFor gauge theories in particular we want to clarify the interplay between quantisation and gauge fixing in covariant gauges and the structure of (systems of) Dyson–Schwinger equations (DSE). We want to investigate this in the context of higher dimens ...
DFG Research Grant: Yangian Symmetry in Quantum Gauge Field Theory
Plefka, Jan, Prof. Dr. (Theoretical Physics / Quantum Field Theory beyond the Standard Model and String Theory)
Duration of Project: 01/2017  09/2020
Financer: DFG: SachbeihilfeOur understanding of nature at its deepest level is governed by symmetries. This proposal aims at studying hidden symmetries in quantum field theory going beyond the established spacetime symmetries of the Poincare group and its supersymmetric or co ...
DFG Temporary Position/2: Gauge/String Theory Duality and Integrable Systems
Eden, Burkhard, Dr. (Mathematical Physics of Space, Time and Matter)
Duration of Project: 11/2013  11/2015
Financer: DFG: Eigene Stelle (Sachbeihilfe)In quantum field theory (QFT) in four dimensions calculations can often only be done by perturbation theory w.r.t. the coupling constant. In the case of electromagnetism this is the electric charge which is a very small parameter so that the leading ...
DFG Temporary Position/3: Gauge/String Theory Duality and Integrable Systems
Eden, Burkhard, Dr. (Mathematical Physics of Space, Time and Matter)
Duration of Project: 10/2016  09/2018
Financer: DFG: Eigene Stelle (Sachbeihilfe)In quantum field theory (QFT) in four dimensions calculations can often only be done by perturbation theory w.r.t. the coupling constant. In the case of electromagnetism this is the electric charge which is a very small parameter so that the leading ...
DFG Temporary Position: Integrability and Conformal Symmetry in Four Dimensions
Löbbert, Florian, (Theoretical Physics / Quantum Field Theory beyond the Standard Model and String Theory)
Duration of Project: 10/2019  12/2021
Financer: DFG: Eigene Stelle (Sachbeihilfe)One source of inspiration to tackle the problems of modern quantum field theory comes from the socalled gauge/gravity duality. This conjectured correspondence states that certain highly symmetric quantum field theories in four dimensions have a dual ...
DFG Temporary Position: Integrability in Four Dimensions
Löbbert, Florian, (Theoretical Physics / Quantum Field Theory beyond the Standard Model and String Theory)
Duration of Project: 10/2017  09/2019
Financer: DFG: Eigene Stelle (Sachbeihilfe)Integrable models furnish a fertile arena for studying the theoretical framework that underlies our physical reality. They have a natural home in two dimensions and feature in elegant limits of higher dimensional systems. Notably, integrable models h ...

Banerjee, Debasish, Dr. (Theoretical Physics / Quantum Field Theory beyond the Standard Model and String Theory)
Duration of Project: 08/2018  11/2020
Financer: DFG: Eigene Stelle (Sachbeihilfe)A firstprinciples study of the nonperturbative physics in strongly interacting systems is a challenging field of research. It impacts a wide variety of areas, from new physics beyond the Standard Model of particle physics, to Quantum Chromodynamics ...
EU: Scattering Amplitudes: From Geometry to EXperiment (SAGEX)
Plefka, Jan, Prof. Dr. (Theoretical Physics / Quantum Field Theory beyond the Standard Model and String Theory)
Duration of Project: 09/2018  08/2022
Financer: Europäische Union (EU)  HU als BeteiligteScattering amplitudes, describing the observations of highenergy collider experiments, provide a window into the fundamental structures predicted by relativistic quantum theories. By identifying and exploiting seemingly disparate concepts from abstr ...
Gauge Dependence and DysonSchwinger Equations II
Kreimer, Dirk, Prof. (Theoretical Physics / Mathematical Physics)
Duration of Project: 01/2020  12/2021
Financer: DFG: SachbeihilfeWe aim at an understanding of gauge invariance in offshell Green functions. Modern algebraic algebraic methods allow to attack the problem via the study of coideals in Hopf algebras. Green functions appear as solutions to fixed point equations in t ...
Interdisciplinary Center for Research in Mathematical Physics
Kreimer, Dirk, Prof. (Theoretical Physics / Mathematical Physics)
Duration of Project: 01/2016  12/2020
The Kolleg Mathematik Physik Berlin is an interdisciplinary center at HumboldtUniversität zu Berlin. Its community of research groups shares a mutual interest in Mathematics and Physics. Quantum field theory is their unifying theme, which connects t ...

Kreimer, Dirk, Prof. (Theoretical Physics / Mathematical Physics)
Duration of Project: 10/2016  09/2022
The International Max Planck Research School (IMPRS) for Mathematical and Physical Aspects of Gravitation, Cosmology and Quantum Field Theory addresses fundamental questions about the nature of classical and quantum gravity and its links to the funda ...
JRG/1: A Large Radio Detector for Neutrinos in the Antarctic Ice
Nelles, Anna, Dr. (Junior Research Groups)
Duration of Project: 03/2018  02/2021
Financer: DFG: NachwuchsgruppeAn efficient detector for neutrinos at energies between 10^16 and 10^20 eV will be the ultimate tool to unravel the origin of ultrahigh energy cosmic rays (UHECRs). Despite decades of research, the sources of UHECRs remain elusive, mostly due to com ...
JRG/1: Exact Results in Extended Holography
van Tongeren, Stijn Jurrien, Dr. Ph.D. (Theoretical Physics / Mathematical Physics of Space, Time and Matter)
Duration of Project: 09/2018  08/2023
Financer: DFG: NachwuchsgruppeThe study of integrable models in the AdS/CFT correspondence has provided deep insights into string theory, the holographic principle, and the finite coupling behavior of quantum field theory. The proposed research group would aim to extend this appr ...
JRG/1: Exploring the Landscape of String Theory Flux Vacua Using Exceptional Field Theory
Malek, Emanuel, Dr. (Junior Research Groups)
Duration of Project: 08/2020  07/2023
Financer: DFG: NachwuchsgruppeString theory, our mostdeveloped theory of quantum gravity, is only consistent in ten dimensions. Nonetheless, we can obtain insight into lowerdimensional physics by "compactifying" it, i.e. considering string theory on spaces where some dimensions ...
Multiparticle contribution to hadronic correlation functions using Chiral Perturbation Theory
Bär, Oliver, PD Dr. (Theoretical Physics / Phenomenology of Elementary Particles beyond the Standard Model)
Duration of Project: 02/2017  02/2020
Financer: DFG: Eigene Stelle (Sachbeihilfe)Current and future lattice QCD simulations with physically light pion masses face new challenges. Multiparticle states with one or more pions are expected to cause sizable multiparticlestate contaminations in hadronic correlation functions, leadin ...
Numerical approaches for twoloop amplitudes
Schulze, Markus, Dr. (Theoretical Physics / Phenomenology of Elementary Particles beyond the Standard Model)
Duration of Project: 11/2017  10/2019
Financer: DFG: SachbeihilfeThe project concerns developing a fully numerical approach to twoloop amplitudes in QCD. The method is expected to enable precision calculations which are currently unfeasible with conventional analytic solutions, but urgently required for LHC pheno ...
Phenomenological studies of topquark properties at hadron collider
Uwer, Peter, Prof. Dr. rer. nat. (Theoretical Physics / Phenomenology of Elementary Particles beyond the Standard Model)
Duration of Project: 07/2012  06/2015
Financer: BMBFThe main goal of the project is to improve our current understanding of topquark properties using experimental input obtained in hadronic collisions. Topquark physics is one of the central research topics at the Large Hadron Collider (LHC). Since t ...

Uwer, Peter, Prof. Dr. rer. nat. (Theoretical Physics / Phenomenology of Elementary Particles beyond the Standard Model)
Duration of Project: 01/2009  12/2014
Financer: Mischfinanzierung (Schwerpunkt Bund)Physics at the Terascale: Physics Analysis, Grid Computing, Detector Physics and Accelerator Physics
Research in particle physics is motivated by the goal of attaining a fundamental description of the laws of physics, such as explaining the origi ... Precision analysis of data concerning a fourth fermion generation with CKMfitter
Lacker, Heiko, Prof. Dr. (Experimental Physics / Elementary Particles Physics II)
Duration of Project: 10/2010  06/2014
Financer: DFG: SachbeihilfeConstraints on parameters for a fourth generation of fermions with the Standard Model of Particle Physics. The data of the LargeHadron Collider at CERN on the production and decay channels of Higgs bosons allowed us to exclude a 4. fermion generatio ...

Lacker, Heiko, Prof. Dr. (Experimental Physics / Elementary Particles Physics II)
Duration of Project: 01/2017  12/2019
Financer: German Israel FoundationSearch for longlived particles, in particular, sterile neutrinos with the ATLAS detector using displaced vertices.
RTG 1504/1: Mass, Spectrum, Symmetry: Particle Physics in the Era of the Large Hadron Collider
Plefka, Jan, Prof. Dr. (Theoretical Physics / Quantum Field Theory beyond the Standard Model and String Theory)
Duration of Project: 04/2009  12/2013
Financer: DFG: GraduiertenkollegsThe standard model of elementary particle physics summarizes our theoretical understanding of the nature of elementary particles and has been formidably confirmed by experiment in the last decades. It is nevertheless clear that the standard model onl ...
RTG 1504/2: Mass, Spectrum, Symmetry
Lacker, Heiko, Prof. Dr. (Experimental Physics / Elementary Particles Physics II)
Duration of Project: 10/2013  12/2018
Financer: DFG: GraduiertenkollegsThe standard model of elementary particle physics summarises our theoretical understanding of the nature of elementary particles and has been formidably confirmed by experiment in the last decades. It is nevertheless clear that the standard model onl ...
RTG 2575/1: Rethinking Quantum Field Theory
Plefka, Jan, Prof. Dr. (Theoretical Physics / Quantum Field Theory beyond the Standard Model and String Theory)
Duration of Project: 04/2020  09/2024
Financer: DFG: GraduiertenkollegsRecent findings have revealed that the Standard Model of particle physics – which brings together the current understanding of the physics of elementary particles in a quantum field theory – requires rethinking. Using a broad research approach, the R ...
Topquark physics at colliders
Uwer, Peter, Prof. Dr. rer. nat. (Theoretical Physics / Phenomenology of Elementary Particles beyond the Standard Model)
Duration of Project: 01/2009  12/2014
Financer: DFG: Sonderforschungsbereich  BeteiligungenThe topquark, the heaviest known elementary particle, is an excellent probe of the fundamental interactions at (sub)attometer distances. Theoretical investigations of the production and decay of these quarks are essential for the analysis of the cor ...
Upgrade of the ATLAS silicon stripe detector for the extension of the HL LHC
Lacker, Heiko, Prof. Dr. (Experimental Physics / Elementary Particles Physics II)
Duration of Project: 07/2015  12/2018
Financer: BMBFR&D work for the construction of 500 detector modules in one endcap of the silicon strip detector of the future ATLAS detector for the highluminosity LHC. In particular: characterization of Hamamatsu sensors, development of tools to build
modules o ...
Peters, Achim, Prof. Ph.D. (Experimental Physics / Optical Metrology)
Duration of Project: 05/2016  12/2016
Financer: Bundesministerium für Wirtschaft und TechnologieDie Mission BOOST (Boost Symmetry Test) soll die Konstanz der Lichtgeschwindigkeit mit bisher unerreichter Genauigkeit testen. Dazu wird ein präziser Vergleich zweier Frequenzreferenzen in Bezugssystemen variierender Geschwindigkeit bezüglich des kos ...