Projects (29)

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  • 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: Sachbeihilfe

    Our 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 space-time symmetries of the Poincare group and its supersymmetric or co ...

  • 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: BMBF
    R&D work for the construction of 500 detector modules in one endcap of the silicon strip detector of the future ATLAS detector for the high-luminosity LHC. In particular: characterization of Hamamatsu sensors, development of tools to build
    modules o ...
  • Top-quark 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 - Beteiligungen

    The top-quark, 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 ...

  • 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: Graduiertenkollegs

    Recent 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 ...

  • 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: Graduiertenkollegs

    The 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 ...

  • Reconstruction techniques for low-mass long-lived particles and application to the search for O(10 GeV) neutrinos

    Lacker, Heiko, Prof. Dr. (Experimental Physics / Elementary Particles Physics II)

    Duration of Project: 01/2017 - 12/2019

    Financer: German Israel Foundation

    Search for long-lived particles, in particular, sterile neutrinos with the ATLAS detector using displaced vertices.

  • 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: Sachbeihilfe

    Constraints on parameters for a fourth generation of fermions with the Standard Model of Particle Physics. The data of the Large-Hadron Collider at CERN on the production and decay channels of Higgs bosons allowed us to exclude a 4. fermion generatio ...

  • Physics at the Terascale

    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 ...
  • Phenomenological studies of top-quark 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: BMBF

    The main goal of the project is to improve our current understanding of top-quark properties using experimental input obtained in hadronic collisions. Top-quark physics is one of the central research topics at the Large Hadron Collider (LHC). Since t ...

  • Numerical approaches for two-loop amplitudes

    Schulze, Markus, Dr. (Theoretical Physics / Phenomenology of Elementary Particles beyond the Standard Model)

    Duration of Project: 11/2017 - 10/2019

    Financer: DFG: Sachbeihilfe

    The project concerns developing a fully numerical approach to two-loop 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 ...

  • Multi-particle 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. Multi-particle states with one or more pions are expected to cause sizable multi-particle-state contaminations in hadronic correlation functions, leadin ...

  • 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: Nachwuchsgruppe

    String theory, our most-developed theory of quantum gravity, is only consistent in ten dimensions. Nonetheless, we can obtain insight into lower-dimensional physics by "compactifying" it, i.e. considering string theory on spaces where some dimensions ...

  • 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 - 08/2021

    Financer: DFG: Nachwuchsgruppe

    The 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: 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: Nachwuchsgruppe

    An efficient detector for neutrinos at energies between 10^16 and 10^20 eV will be the ultimate tool to unravel the origin of ultra-high energy cosmic rays (UHECRs). Despite decades of research, the sources of UHECRs remain elusive, mostly due to com ...

  • 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 ...

  • 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 - 09/2021

    Financer: DFG: Eigene Stelle (Sachbeihilfe)

    One source of inspiration to tackle the problems of modern quantum field theory comes from the so-called gauge/gravity duality. This conjectured correspondence states that certain highly symmetric quantum field theories in four dimensions have a dual ...

  • Gauge Dependence and Dyson-Schwinger Equations II

    Kreimer, Dirk, Prof. (Theoretical Physics / Mathematical Physics)

    Duration of Project: 01/2020 - 12/2021

    Financer: DFG: Sachbeihilfe

    We aim at an understanding of gauge invariance in off-shell Green functions. Modern algebraic algebraic methods allow to attack the problem via the study of co-ideals in Hopf algebras. Green functions appear as solutions to fixed point equations in t ...

  • Gauge Dependence and Dyson-Schwinger Equations

    Kreimer, Dirk, Prof. (Theoretical Physics / Mathematical Physics)

    Duration of Project: 10/2017 - 12/2019

    Financer: DFG: Sachbeihilfe

    For gauge theories in particular we want to clarify the interplay between quantization 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 ...

  • 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 Beteiligte

    Scattering amplitudes, describing the observations of high-energy collider experiments, provide a window into the fundamental structures predicted by relativistic quantum theories. By identifying and exploiting seemingly disparate concepts from abstr ...

  • DAAD PRIME Fellowship: Johannes Thürigen (2016–2018)

    Kreimer, Dirk, Prof. (Theoretical Physics / Mathematical Physics)

    Duration of Project: 09/2016 - 06/2018

    Financer: DAAD
  • 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: Sonderforschungsbereich

    The 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 ...

  • 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: Sonderforschungsbereich

    Establishing 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 647/1: Evolution of Geometrical Structures in Classical and Quantum Cosmology (SP B05)

    Plefka, Jan, Prof. Dr. (Collaborative Research Centre 555 'Complex Non-linear Processes')

    Duration of Project: 10/2006 - 12/2008

    Financer: DFG: Sonderforschungsbereich

    In dem Projekt soll das Zusammenspiel zwischen String-Theorie, Schleifen-Quanten-Gravitation und kosmologischer Feldtheorie untersucht werden. Dabei spielen verschiedene Fragestellungen eine Rolle, die sowohl von der klassischen wie von der Quanten-S ...

  • CRC 647/1: Conformal Symmetry, Supergravity, and the AdS/CFT Correspondence (SP A06)

    Plefka, Jan, Prof. Dr. (Collaborative Research Centre 555 'Complex Non-linear Processes')

    Duration of Project: 10/2006 - 09/2008

    Financer: DFG: Sonderforschungsbereich

    Die Anti-de Sitter/Conformal Field Theory-Korrespondenz verbindet Gravitationstheorien, die mit differentialgeometrischen Methoden behandelt werden können, mit Quantenfeldtheorien und der Struktur der Elementarteilchen. In diesem Projekt soll diese w ...

  • 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 Gitter-QCD ist die etablierte Methode für theoretische Berechnungen zur starken Wechselwirkung jenseits der Störungstheorie. Um qualitative Resultate zu erhalten, werden aufwendige Monte-Carlo-Simulationen durchgeführt. Die Gitter-QCD hat sich in ...

  • "International Max Planck Research School for Mathematical and Physical Aspects of Gravitation, Cosmology and Quantum Field Theory" IMPRS

    Kreimer, Dirk, Prof. (Theoretical Physics / Mathematical Physics)

    Duration of Project: 10/2016 - 09/2022

  • Neue Perspektiven in Stark Gekoppelten Systeme: Vorbereitung auf Quantensimulatoren

    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)
  • Kolleg Mathematik Physik Berlin

    Kreimer, Dirk, Prof. (Theoretical Physics / Mathematical Physics)

    Duration of Project: 01/2016 - 12/2020

    The Kolleg Mathematik Physik Berlin is an interdisciplinary center at Humboldt University Berlin. Its community of research groups shares a mutual interest in Mathematics and Physics. Quantum field theory is their unifying theme, which connects to al ...

  • Aufstellung der Instrument-Anforderungen, Auswahl der Laserquelle und Entwicklungsarbeiten für den Jod-Standard

    Peters, Achim, Prof. Ph.D. (Experimental Physics / Optical Metrology)

    Duration of Project: 05/2016 - 12/2016

    Financer: Bundesministerium für Wirtschaft und Technologie

    Die 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 ...

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