Large Grants
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Previous Programs

2018 Agency in the Physical World
Awardees; RFP download

2016 Physics of the Observer
Awardees; RFP download

2015 The Physics of What Happens
Awardees; RFP download

2013 Physics of Information
Awardees; RFP download

2010 The Nature of Time
Awardees; RFP download

2008 Foundational Questions in Physics and Cosmology
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2006 Foundational Questions in Physics and Cosmology
Awardees; RFP download

Gregor Weihs
University of Innsbruck

Caslav Brukner
University of Vienna

Project Title

Higher-order Interferences and Time in Alternatives to Quantum Theory

Project Summary

Quantum theory has been with us for about a century almost in its present form. While it provides us with excellent tools to calculate the inner workings of matter and the power to create technology that we would have termed science fiction only a few years ago there are still many things that we don't understand about it - why is quantum theory the way it is? Furthermore, quantum theory seems to resist our desire to unify it with a description of gravity - Could we modify quantum theory to make it compatible?

In our project, we will explore some alternatives to quantum theory and quantum theory with small modifications. Theoretical studies and quantum optical experiments will show us whether these alternatives and modifications could be consistent with what we find in nature. If so, our findings may point us in the right direction for a unified theory, or the understanding of the quantum classical boundary. If, instead, we find that these alternatives can be refuted, we will know that we have to focus our efforts elsewhere.

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