3 papers
quant-ph2026
Quantum theory based on real numbers cannot be experimentally falsified
Timothée Hoffreumon, Mischa P. Woods
Whether the complex numbers of standard quantum theory are experimentally indispensable has remained open for decades. Real quantum theory (RQT), obtained by replacing complex ampl…
quant-ph2025
Quantum theory does not need complex numbers
Timothee Hoffreumon, Mischa P. Woods
Quantum theory was radically different from the theories of nature which came before it. One key difference was its use of complex numbers. This opened a longstanding debate over w…
quant-ph2020
The Multi-round Process Matrix
Timothée Hoffreumon, Ognyan Oreshkov
We develop an extension of the process matrix (PM) framework for correlations between quantum operations with no causal order that allows multiple rounds of information exchange fo…