Projects (7)

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  • 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 ...

  • 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 ...

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