# Interaction between Light and Matter

## Members

## Overview

Group Leader
| email |
room |
phone +49 (0)89 2180- |

Dr. D.-A. Deckert | deckert@math.lmu.de | 305 | -4442 |

Doctoral Students | |||

Felix Hänle | haenle@math.lmu.de | 303 | -4606 |

Lukas Nickel | nickel@math.lmu.de | 303 | -4606 |

Markus Nöth | noeth@math.lmu.de | 313 | -4643 |

Martin Oelker | oelker@math.lmu.de | 445 | -4170 |

Alumni Doctoral Students |
|||

Dr. Vera Hartenstein | hartenstein@math.lmu.de | 302 | -4620 |

Alumni Master Students |
|||

Leopold Kellers | |||

Julia Kraus | |||

Christian Bild | |||

Felix Hänle | |||

Hannes Hermann |

## Profiles

**Dr. Dirk-AndrÃ© Deckert**studied physics at the LMU Munich and as a DAAD fellow at the University of Queensland in Brisbane, Australia. After his doctoral studies, funded by the BayEFG initiative, today Elite Network of Bavaria, he was awarded the doctoral degree in mathematics at the LMU Munich in 2010. His doctoral thesis "Electrodynamic Absorber Theory" comprises a mathematical and physical investigation of radiation reaction and electron-positron pair creation. The main fields of his research are Foundations of Physics, Quantum Electrodynamics, Many-Body Theory, Quantum Chemistry, Functional Differential Equations and Numerical Analysis. For one year Dr. Deckert conducted research as a post-doc fellow of the DAAD at the University of California Davis where he was later appointed as Arthur J Krener Assistant Professor for three years before commencing his work in the Elite Network of Bavaria in Munich.

**Felix Hänle, MSc,**studied physics at the LMU Munich and obtained his Bachelor degree in summer 2013. Afterwards, he enrolled in the graduate program "Theoretical and Mathematical Physics" of the Elite Network of Bavaria at the LMU Munich. Within this program he studied abroad at the University of British Columbia in Vancouver for one semester. His main focus was on quantum field theory and second quantized fields in particular. In his masterâ€™s thesis he investigated a class of particle-preserving quantum field models as part of the International Junior Research Group "Interaction between light and matter" in the Elite Network of Bavaria. Since October 2015 he has been working as a doctoral student on resonances and ultraviolet properties in persistent models of quantum electrodynamics in this group. Besides, he is a teaching assistant at the Mathematical Institute of the LMU Munich.

**Lukas Nickel, MSc,**studied physics and mathematics at the LMU Munich and finished the master program "Theoretical and Mathematical Physics" of the Elite Network of Bavaria in September 2015. Driven by a profound interest in the mathematical and conceptual foundations of physics, he wrote his master thesis about relativistic interactions in quantum theories, where interacting models were formulated with the help of multi-time wave functions. Since 2014, he also gives lectures about physics and mathematics for the general public at the Münchner Volkshochschule. As a doctoral student in the International Junior Research Group "Interaction between light and matter", he now continues the study of physical and mathematical aspects of the multi-time formalism for relativistic quantum mechanics.

**Markus Nöth, MSc,**studied physics and mathematics at the LMU Munich and received his bachelor degree in the summer of 2013. He pursued his passion for the foundations of physics by joining the master program "Theoretical and Mathematical Physics" of the Elite Network of Bavaria. In the course of this program he studied abroad for one semester in Japan at the Japan Advanced Institute of Science and Technology. Markus attained his master degree in January of 2016, his master thesis sheds new light on the renowned "Unruh effect" by introducing parallels between quantum and classical field theory. He joined the International Junior Research Group "Interaction between light and matter" as a PhD student in February of 2016. As a main project of research he investigates the existence of a mathematically rigorous description of quantum field theory of external fields, while additionally working as a teaching assistant.

**Martin Oelker, MSc,**studied Physics and Philosophy at the LMU Munich. He finished his studies 2014 with his Master thesis in Mathematical Physics with the title "On the self-adjointness of the Dirac operator for two interacting particles". It treats a mathematical problem in the larger framework of foundations of quantum electrodynamics, implementing ideas from direct-interaction theories. Since 2015 he is part of the International Junior Research Group "Interaction between light and matter" in the Elite Network of Bavaria as doctoral student where he continues his investigation of the Dirac operator for many interacting particles and its implications on P.A.M. Dirac's hole theory that describes electron-positron pair creation.