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Vor einem Tag · This paper presents a philosophical analysis of the structure of black holes, focusing on the event horizon and its fundamental status. While black holes have been at the centre of countless paradoxes arising from the attempt to merge quantum mechanics and general relativity, recent experimental discoveries have emphasised their importance as objects for the development of Quantum Gravity. In ...
Vor 4 Tagen · Non-relativistic quantum mechanics (NRQM) has an accepted measurement theory for laboratory measurements (see, e.g., Busch et al. , a standard reference on Quantum Measurement Theory). There is no consensus about how to interpret NRQM (including this measurement theory); this is the infamous Measurement Problem. However, the recipe for extracting probabilistic predictions for measurement ...
Vor 4 Tagen · Bell's theorem is an important philosophical and mathematical statement in the theory of quantum mechanics. It showed that a category of physical theories called local hidden variables theory could not account for the degree of correlations between the spins of entangled electrons predicted by quantum theory.
Vor 3 Tagen · Quantum field theory (this is a generalization of the previous problem): Is it possible to construct, in a mathematically rigorous way, a quantum field theory in 4-dimensional spacetime that includes interactions and does not resort to perturbative methods? Cosmology and general relativity
Vor 4 Tagen · The internet is a case in point: before its widespread use, no one predicted the rise of social media and the host of serious ethical issues that it causes, including increased rates of suicide and other mental health issues, and its destabilizing effects on democracies – particularly in a year like 2024 when half the world will be casting votes in national and regional elections.
Vor 3 Tagen · It is typically applied to microscopic systems: molecules, atoms and sub-atomic particles. It has been demonstrated to hold for complex molecules with thousands of atoms, but its application to human beings raises philosophical problems, such as Wigner's friend, and its application to the universe as a whole remains speculative.
Vor 5 Tagen · Quantum Physics. May 7, 2024. Editors' notes. The quantum theory of gravitation, effective field theories and strings: Past and present. by Clare Sansom, SciencePOD. Credit: CC0 Public...
