21 Postdoctoral Fellowship at University of Hamburg, Germany

A university degree in a relevant field.

A PhD in a relevant field or a strong record in scientific work equivalent to a PhD degree (having passed the oral defence at least).

• broad knowledge in quantum mechanics, atomic physics and ultracold quantum gases expected
• prior experience with experiment control system and data evaluation system (e.g. based on matlab and python)
• strong background in experimental work, preferably experience with ultra-high vacuum systems, optics, high-power laser systems and cryogenics
• self-motivated and working well in an interdisciplinary field
• excellent interpersonal skills and a friendly nature
• good communication skills in English
• ready to spend a few months at the University of Virginia, United States, for initial training

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

The project “German Contribution to ClimAte Projections for CMIP7 – AR7 Fast Track: DECK and ScenarioMIP Simulations” (CAP7) funded by the Federal Ministry of Education and Science (BMBF) aims to make a highly visible national contribution to CMIP7 with the Earth system models developed and applied in Germany. In this sub-project, the ICON model, in a new configuration developed for simulations on climate-relevant time scales named ICON-XPP (eXtended Prediction and Projection) will be further developed. In addition, in ICON-XPP the nitrogen cycle and the interactive carbon cycle are also implemented, so that emission-driven climate projections, which are recommended as preferred in CMIP7, can be carried out for the first time.

The main focus of this project part at Universität of Hamburg will to enhance the representation of ocean biogeochemical processes and carbon storage in the Hamburg Ocean Carbon Cycle Model (HAMOCC). HAMOCC will be tested and calibrated in ICON-XPP, in concentration-driven simulations, as well as in the model configuration enabled by interactive representation of air-sea and air-land CO2 fluxes and prognostic representation of CO2 concentration the in the atmosphere. With these novel simulations we aim to assess the representation of carbon-climate feedbacks and ocean storage of carbon under changing CO2 emissions.

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

The Cluster of Excellence “Quantum Universe” performs research to understand mass and gravity at the interface between quantum physics and cosmology. The research team includes leading scientists from mathematics, particle physics, astrophysics, and cosmology at Universität Hamburg and DESY.

The specific duties include research at the Institute of Quantum Physics. The research associate will conduct theoretical work in the fields of machine-learning-based noise reduction of interferometer measurement data in the context of gravitational-wave detection. The work will partly be performed in a team, partly self-dependent, and in strong collaboration with ongoing experiments. Scientific results have to be presented by talks and in written form.

Doctoral research associates will become members of the Quantum Universe Research School (QURS), which provides academic and soft skills training, as well as career planning support. In addition, they will receive individual budgets to facilitate the attendance of summer schools and conferences, and to support other educational measures. Additional travel money for project-specific duties will be provided by the hosting research groups. Doctoral research associates may participate in teaching at the University and in the organization of the Cluster via an early career council.

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

Research work (editorial, palaeographical, and history of transmission) on materials (including digital materials) relevant to the critical edition of the Etymologicum Gudianum.

Deadline : 12.10.2024

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

The project aims at developing novel quantum and hybrid algorithms for quantum simulation based on a Rydberg tweezer platform for ultracold atoms. Applications to relevant computational and optimization problems shall be performed.

Ideally a close interface with the underlying driven many-body Rydberg physics will be established. Research is performed in the above theory group with an immediate link to the corresponding experimental groups.

Duties primarily include teaching and research. Research associates may also pursue independent research and further academic qualifications.

• theoretical and computational research on electronic correlation effects interplaying with topological effects in 2D moiré systems, especially twisted graphene multilayers and TMDC multilayers
• development of corresponding many-body methods
• establishment of charge-self-consistent DMFT in combination with solvers such as Lanczos and CT-QMC for the simulation of 2D moiré systems
• description of transport phenomena in these materials at DMFT level
• teaching at the level of four hours/week

Duties primarily include teaching and research. Research associates may also pursue independent research and further academic qualifications.

Theoretical and computational research on the topic of superconductivity in correlated electron systems with special foci on multiorbital and 2D moiré systems. Development of corresponding many-body methods and coupling to ab initio methods. The successful applicant is expected to combine electronic structure methods with Green function based many-body methods in the theory of superconductivity. Teaching of four teaching hours per week during teaching times (4 LVS).

Duties include teaching and research in the respective department or institute. Research associates may also pursue independent research and further academic qualifications as well as acquire teaching experience. These duties are intended to promote academic achievement. Therefore, at least one-third of set working hours will be made available for the associate’s own academic work.

The overall mission of the professorship for Functional Forest Ecology is to understand how human-accelerated environmental change affects biogeochemical cycles and biodiversity of forests and other ecosystems of major C sink strength. To explore this complex task, we focus mostly on belowground functions and processes which are decisive for ecosystem C storage and climate feedbacks. The offered position will complement our current research foci by developing a strong research agenda on rhizosphere ecology and/or ecophysiology of forests under climate change. The University of Hamburg provides for this an inspiring, dynamic, and international academic environment and an outstanding platform for the career development of postdoctoral researchers.

A university degree in a relevant field plus doctorate.

A university degree in business administration (BWL), sociology, or neighboring fields, plus doctorate with an excellent degree in the area of sustainability & management, corporate climate action, organizational responses to climate change in the business world. Further requirements are substantial experience in academia and publications in internationally renowned journals. Candidates must be fluent in English and have excellent qualitative and/or quantitative research methods skills. Furthermore, we expect experiences with industry projects and knowledge in the area of corporate carbon/climate strategies.

In the period from as soon as possible until 31.12.2025, research associates will be expected primarily to teach and conduct research. The research associate will also have the opportunity to pursue further academic qualifications, in particular a doctoral dissertation. At least one-third of set working hours will be made available for the research associate’s own academic work.

In the period from 01.01.2026 for the remaining time duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

This research associate position is for the project, “Quantum gas microscopy of geometrically frustrated Hubbard systems“ in the working group with Prof. Peter Schauss (http://ultracold.phys.virginia.edu). The quantum gas microscope is fully operational and we imaged fermionic Mott insulators in a triangular lattice (PRX Quantum 2, 020344 (2021). This is a great opportunity to upgrade a working quantum gas microscope to apply the imaging of fermionic quantum-many body system on the single-atom level to explore novel directions. There may be the opportunity for a research stay of a few months at the University of Virginia to learn experimental techniques, to gain international experience and to explore Virginia (virginia.org).

In the period from as soon as possible until 31.12.2025, research associates will be expected primarily to teach and conduct research. The research associate will also have the opportunity to pursue further academic qualifications, in particular a doctoral dissertation. At least one-third of set working hours will be made available for the research associate’s own academic work.

In the period from 01.01.2026 for the remaining time duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

This research associate position is for the project “Large-scale entanglement in a cryogenic ytterbium tweezer array“ in the working group of Prof. Peter Schauss (http://ultracold.phys.virginia.edu). The goal is to develop a next-generation tweezer platform for ytterbium atoms in a cryogenic environment to suppress losses, increase coherence times and improve fidelity of entanglement operations for future neutral atom quantum computers. There may be the opportunity for a research stay of a few months at the University of Virginia to learn experimental techniques, to gain international experience and to explore Virginia (virginia.org).

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

Successful candidates are required to perform interdisciplinary and collaborative research concerning the development and analysis of high-performance numerical algorithms for fluid flow simulation methods.

Research associates will be expected primarily to teach and conduct research. The research associate will also have the opportunity to pursue further academic qualifications, in particular a doctoral dissertation. At least one-third of set working hours will be made available for the research associate’s own academic work.

The research associate will examine Effects of acclimation, dispersal, and establishment on diversity patterns of mosses and lichens under climate change. These organisms are key for ecosystem functioning in many regions of the world, but mosses and lichens are seldom represented in process-based dynamic vegetation models (DGMVs) that are used for prediction of future vegetation patterns and functions at global scale. In particular, processes that may limit range shifts under climate change, such as dispersal and establishment, or mechanisms of acclimation to altered climate at the individual level, are missing in DGVMs.

The aim of this project is to estimate how these potentially limiting processes affect future distribution patterns of mosses and lichens, focusing on their functional diversity and the associated ecosystem functions. To this end, an established DGVM of mosses and lichens will be extended by mechanisms of dispersal, establishment and acclimation and evaluated by means of laboratory and small-scale field experiments.

The findings will not only provide new insights into the responses of mosses and lichens to climate change, but will also add new perspectives on the general advancement of DGVMs.

Required teaching associated with this position amounts to 2,5 LVS (course hours per week).

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

ATP-binding cassette (ABC) transporters catalyze substrate translocation across cellular membranes and are ubiquitously expressed in all domains of life. The reaction cycle of ABC transporters is still not completely understood. In this project we seek to understand the complete reaction cycle of homo- and heterodimeric ABC transporters using a combination of small-angle neutron scattering (SANS) in lipidic carrier systems, time-resolved small-angle X-ray scattering (TR-SAXS) and time-resolved cryo-electron microscopy (TR-EM). Our ultimate goal is to identify the accompanying structural transitions with high temporal resolution.

Duties primarily include teaching and research. Research associates may also pursue independent research and further academic qualifications.

In the period from 1 November 2024 to 31 December 2025, the number of LVS is 0. In the period from 1 January 2026 to 31 October 2027, the number of LVS is 4.

The tasks fall into the areas of functional morphology, biomechanics, wood sciences and bionics of woody plants. Specifically, reaction wood is to be examined for its biomimetic potential, with a particular focus on the G-fibers, the plant muscles. The project results are to be abstracted in interdisciplinary cooperation and transferred into concepts for technical implementation. The functional principle of reaction wood is to be analyzed using microscopic (SEM, light microscopy, computer tomography, etc.) and biomechanical methods for different groups of organisms and organs. The tasks also include participation in the teaching of the department to the extent of 4 LVS in the final phase of the project (2026-2027). A high degree of responsibility, independence and organizational talent as well as basic teaching experience and sociability are required.

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

The duties are defined by the project “L2: Quantifying Dynamical Regimes in the Ocean and the Atmosphere” which contributes to the German Science Foundation Transregional Collaborative Research Centre 181 “Energy Transfers in the Atmosphere and the Ocean” (DFG CRC 181, https://www.trr-energytransfers.de). The postdoctoral position is located in the Atmospheric Dynamics and Predictability group, https://www.mi.uni-hamburg.de/en/arbeitsgruppen/theoretische-meteorologie.html. The successful candidate will closely work with the senior group members and collaborators in the project partner institutes.

The focus of the postdoctoral project is on non-linear flow decomposition and on non-hydrostatic effects in high-resolution weather and climate models. Responsibilities include 1) analysis of atmospheric energy budget in the reanalysis data and models, 2) quantification of non-hydrostatic effects in km-scale models, and 3) dissemination of the results through peer-reviewed publications and presentations at conferences.

The increasing release of antibiotics, biocides, toxins, plasticizers and microplastics has a direct and indirect impact on microbial diversity and, through selection, promotes the spread of bacterial resistance mechanisms causing a high risk for human and animal health. In addition, climate change and other man-made factors increase and speed up these effects. The MOMOBIO-2 project will develop very detailed mainly omic-based data sets and models to track, monitor and predict the urban microbiota and changes in its biodiversity and resistance profile along the wastewater streams of the City of Hamburg as well as urban water bodies. Our main goal is to use changes in microbial biodiversity as an indirect measure for animal and human health.

The candidate will represent the functional diversity of microbial communities in a process-based ecological modelling approach and simulate the impacts of different environmental factors, in particular stressors, on shifts in community composition. The model will then be applied to predict abundances of potential pathogens that are relevant for human health, thereby integrating the experimental work in other parts of the MOMOBIO-2 project.

Functional diversity will be explicitly modelled based on population dynamics of a large number of microbial functional types that differ with regard to several key traits, based on existing eco-evolutionary models. The model will be parameterized using data on reaction rates and the simulated abundances will be validated against observational data, collected in other work packages of the project. The model will focus on evolving resistomes, xenobiotic gene loads, and virulence factors. The spread of antibiotic resistance in microbial communities will be scaled up along the flowpath toward the Elbe river in response to changes in stressor levels.

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications. They may also pursue doctoral studies outside of working duties.

In this project, you will contribute to the development and assessment of deep learning algorithms to infer internal tidal signals or energetic metrics related to internal tides. Oceanic internal tides, generated by astronomically forced tides flowing over sloping bottom topography, are crucial in the oceanic energy balance, contributing to vertical mixing of nutrients and tracers, and sustaining the ocean circulation. Extracting information about internal tides from satellite observations remains challenging, due to sparse temporal sampling and the complexity of the underlying dynamics. Recently, deep learning algorithms have shown promises in handling this task. You will help us further develop and evaluate them. The deep learning algorithms will be trained on realistic modelling data, and can serve as efficient diagnostic tools to be applied to both modeling data and real observational data. The work will be done in close collaboration with experts in mathematical methods, ocean modeling and observational oceanography.

We offer the opportunity to work on cutting-edge marine research in an interdisciplinary international team within the TRR network. As a doctoral researcher, you will be part of the TRR Research Training Group ENERGY, distributed across Germany’s leading oceanographic research sites.

In the period from as soon as possible until 12/31/2025, duties primarily include teaching and research. Research associates may also pursue independent research and further academic qualifications.

In the period from 01/01/2026 for the remaining time, duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

Spin systems are an intriguing breeding ground for exotic and topological quasiparticle excitations like anyons and quantum skyrmions. This project utilizes artificial neural networks to simulate the dynamics of topological excitations in spin systems and aims to find fast-time-scale coherent control of these quasiparticles, which has previously only been demonstrated on an adiabatic, i.e., infinitely slow, time scale. The project connects dynamics, topological excitations, and quantum machine learning as its three key aspects.

Your will be part of the research group on “Topology in Condensed Matter Systems” at the I. Institute of Theoretical Physics at University of Hamburg, see https://www.physik.uni-hamburg.de/en/th1/ag-posske.html.

This position is part of the interdisciplinary DFG Research Unit “Big Structural Change” RU BISC (one third of the 75% is funded by RU BISC). The research unit investigates the changing acceptance of and compliance with societal core institutions (e.g., formal rules and social norms) in the face of climate change, globalization & technological change, and mass migration. As part of your dissertation, you will write three to four scientific papers in the field of political economy and/or organizational economics, with a focus on the topic of societal narratives about immigration, and with a methodological focus on economic experiments. You will write at least two experimental papers on narratives about migration, either in sole authorship or as a co-author, present them at conferences and submit them for publication in international peer-reviewed journals (Handelsblatt ranking A+ to C). One paper of your dissertation must be in sole authorship. You participate at the regular meetings and workshops of RU BISC, attend one summer school at least to further develop your methodological skills, and interact with the professor (primary advisor), with the other researchers in RU BISC, other doctoral students and postdocs in the team, and with junior and senior researchers in the department and faculty. This includes attending research seminars at the department. Funding is provided for conference travel and summer schools as well as submissions for publication. You will be involved in teaching by giving tutorials on lectures in B.Sc. Economics (e.g. Microeconomics I and II, Microeconomics for Business students) and other related tasks. Your teaching load is 2 LVS.

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

We offer a PhD student position to advance our understanding of the scalar sector of the Standard Model through searches for additional particles and measurements of the properties of the observed Higgs boson with data from the CMS experiment at CERN. The CMS group at the University of Hamburg consists of more than 60 members and is deeply involved in detector R&D, as well as operation, calibration, and data. The group has long standing involvement in the Higgs area, as well as in the development of related experimental techniques. The successful candidate will work as a doctoral research associate on the running of the experiment, the data analysis and the interpretation in the context of extended Higgs models. This will include the development of advanced machine learning techniques.

Doctoral research associates will become members of the Quantum Universe Research School (QURS), which provides academic and soft skills training, as well as career planning support. In addition, they will receive individual budgets to facilitate the attendance of summer schools and conferences, and to support other educational measures. Additional travel money for project-specific duties will be provided by the hosting research groups. Doctoral research associates may participate in teaching at the University and in the organization of the Cluster via an early career council.

The University of Hamburg is one of the strongest research and education institutions in Germany, and is recognised as a “University of Excellence”. The Institute of Experimental Physics comprises more than 250 members performing research at the leading edge of accelerator physics, collider-based particle physics, astro-particle physics, gravitational waves, photon science, and the development of novel particle detectors. It features electronics and precision mechanics workshops, as well as computing and IT support services. The institute hosts the Cluster of Excellence “Quantum Universe” which performs research to understand mass and gravity at the interface between quantum physics and cosmology. The research team includes leading scientists from mathematics, particle physics, astrophysics, and cosmology at the University of Hamburg and DESY.