Quantum foundations concerns the conceptual and mathematical underpinnings of quantum theory. In particular, we search for novel quantum effects, consider how to interpret the formalism, ask where the formalism comes from, and how we might modify it. Research at Perimeter Institute is particularly concerned with reconstructing quantum theory from more natural postulates and reformulating the theory in ways that elucidate its conceptual structure. Research in the foundations of quantum theory naturally interfaces with research in quantum information and quantum gravity.
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Multiagent paradoxes beyond quantum theory
Vilasini Venkatesh University of York

Resource theories of communication
Hlér Kristjánsson University of Tokyo

Collisions of falsevacuum bubble walls in a quantum spin chain
Ashley Milsted California Institute of Technology

Spacetime and quantum theory: insights via quantum foundations
Marius Krumm Institute for Quantum Optics and Quantum Information (IQOQI)  Vienna

Decoherence vs spacetime diffusion: testing the quantum nature of gravity
Zachary WellerDavies University College London

Selftesting Bell inequalities from the stabiliser formalism and their applications
Flavio Baccari Max Planck Institute for Gravitational Physics  Albert Einstein Institute (AEI)

Can we think timesymmetrically about causation?
Andrea Di Biagio Sapienza University of Rome

Exploring alternatives to quantum nonlocality
Indrajit Sen Chapman University

Time's Arrow of a Quantum Superposition of Thermodynamic Evolutions
Giulia Rubino Institute for Quantum Optics and Quantum Information (IQOQI)  Vienna

The dynamics of difference
Lee Smolin Perimeter Institute for Theoretical Physics

CausalInferential theories: Realism revisited
David Schmid University of Gdansk