Quantum foundations concerns the conceptual and mathematical underpinnings of quantum theory. Research at PI addresses issues such as how quantum theory should be interpreted, what the deeper principles are which underlie the theory, and how quantum theory might be modified. This often involves the search for, and analysis of, novel quantum effects which illustrate the peculiar properties of the theory. Research in the foundations of quantum theory naturally interfaces with research in quantum information and quantum gravity.
quant-ph/0508211 Jon Barrett - Information processing in generalized probabilistic theories gr-qc/0608043 Lucien Hardy - Towards quantum gravity: A framework for probabilistic theories with non-fixed causal structure quant-ph/0602229 Ward Struyve and Hans Westman - A new pilot-wave model for quantum field theory