Korrelationstage 2025

The Korrelationstage 2025 continued a long-standing tradition of this biannual workshop, which has been bringing together researchers working on various aspects of correlated electron physics for almost three decades. The strong lineup of invited speakers was selected with a focus on upcoming research leaders, mostly experienced postdoctoral researchers and junior faculty, so as to provide a stage for timely topics as well as new developments on long-standing issues in many-body physics. This format is well appreciated throughout the community as was reflected by the significant number of contributed talks or posters by established senior participants. Thus, Korrelationstage 2025 fulfilled its aim at bringing together the wider community of researchers working on correlated quantum many-body physics. Some highly represented new topics 2025 included correlation effects in moiré materials, new forms of magnetism, open quantum systems, and variational methods based on tensor networks. At the same time, some topics, which have been around since the 90s like high Tc superconductivity and frustrated magnetism, continue to attract significant attention with recent research breakthroughs.  

All oral presentations, both invited and contributed ones, were held in slots of 25 minutes plus 5 minutes for discussion, and speakers also admitted questions during their talks. Discussions were very lively and productive, often continuing informally during the coffee breaks. There were two poster sessions, Monday and Tuesday after dinner, with an individual focus on even and odd poster numbers, respectively. This splitting did not only serve to provide some guidance within the large exhibition of around 40 posters, but also allowed all poster presenters to examine and discuss the other posters in one of the sessions.   

A particular highlight of the workshop program was the panel discussion on the Future of Publishing in Correlated Many-Body Research on Thursday afternoon moderated by Roderich Moessner. Three major approaches to publishing were represented: non-profit publisher APS by PRB editor S. Kancharla, private sector publisher Nature by Nature Communications editor A. Pertsova, and the community service open access publisher SciPost by its founding editor J. S. Caux. This very open and active discussion attracted very high interest among workshop participants and institute members with many questions from the audience. One of the most prominent topics was the transformation and adaption of a wide range of aspects to the emergence of AI.   

From the very positive feedback by many participants, the organizers are convinced that this event has made a substantial and fruitful contribution to exchanging knowledge on recent developments in correlated many-body systems among a diverse group of participants. Beyond doubt, after many decades of intense research, the field of correlated electrons is still a thriving source of innovation for physics, and the format of Korrelationstage remains an important catalyst for scientific exchange on this journey.