Semidefinite programs are convex optimization problems involving a linear objective
function and a domain of positive-semidefinite matrices. Over the past two decades, they …

Towards the end of 2011, Pusey, Barrett and Rudolph derived a theorem that aimed to show
that the quantum state must be ontic (a state of reality) in a broad class of realist approaches …

John Bell, FRS was one of the leading expositors and interpreters of modern quantum
theory. He is particularly famous for his discovery of the crucial difference between the …

Luciano Floridi presents a book that will set the agenda for the philosophy of information. PI
is the philosophical field concerned with (1) the critical investigation of the conceptual nature …

We present a toy theory that is based on a simple principle: the number of questions about
the physical state of a system that are answered must always be equal to the number that …

Physical Relativity explores the nature of the distinction at the heart of Einstein's 1905
formulation of his special theory of relativity: that between kinematics and dynamics. Einstein …

The Bell-Kochen-Specker theorem establishes the impossibility of a noncontextual hidden
variable model of quantum theory, or equivalently, that quantum theory is contextual. In this …

'Der Kopf, so gesehen, hat mit dem Kopf, so gesehen, auch nicht die leiseste Ahnlichkeit (...)
Der Aspektwechsel.“Du würdest doch sagen, dass sich das Bild jetzt gänzlich geändert hat!” …

Einstein-Podolsky-Rosen steering incarnates a useful nonclassical correlation which sits
between entanglement and Bell nonlocality. While a number of qualitative steering criteria …

In this Letter, we present a cosmic Bell experiment with polarization-entangled photons, in
which measurement settings were determined based on real-time measurements of the …