The PhD positions are open for international students, and it normally takes three to four years to finish one's PhD. We expect applicants to hold a Master's degree in one of the above, or related, fields. It is not necessary to hold the degree at the point of application. However, you must have been awarded your degree prior to the start of the program in September 2025. Candidates have to be fluent in written and spoken English. German is not required but international students will be offered opportunities to take German language courses.