Quantum Darwinism: Zurek argue that certain quantum states ("pointer states") are better at creating multiple, identical copies of themselves in the environment through entanglement. This "survival of the fittest" information is what we perceive as classical reality. The environment essentially "selects" these states, leading to a shared, objective reality.
The 1953 and 1960 Renninger negative-result thought experiments illustrate conceptual paradoxes in the Copenhagen formulation of quantum mechanics. In the 1953 paradox we can infer the presence of a detector in one arm of a Mach-Zehnder interferometer without any particle interacting with the detector. In the 1960 paradox we can infer the collapse of a wavefunction without any change in the state of a detector. I resolve both of these paradoxes by using a time-symmetric formulation of quantum mechanics. I also describe a real experiment that can distinguish between the Copenhagen and time-symmetric formulations.
Aharonov and Bohm proposed a scenario in which quantum particles experience electromagnetic effects even though there is no field in their immediate vicinity.
A new study suggests that the classical world we experience emerges naturally from quantum systems without requiring special conditions, as demonstrated through simulations and the many worlds theory:
- Quantum mechanics reveals a separate realm of tiny particles where particles can exist in multiple states at once, unlike the classical world.
- A new study suggests that the classical world naturally emerges from a wide range of quantum systems, supporting the many worlds interpretation of quantum mechanics.
- The formation of a classical system from quantum events is a natural and unavoidable process, as demonstrated by computer simulations analyzing the evolution of various quantum systems.
- Quantum mechanics reveals a separate realm of tiny particles where particles can exist in multiple states at once, unlike the classical world.
- A new study suggests that the classical world naturally emerges from a wide range of quantum systems, supporting the many worlds interpretation of quantum mechanics.
- The formation of a classical system from quantum events is a natural and unavoidable process, as demonstrated by computer simulations analyzing the evolution of various quantum systems.
This paper presents a new Local Friendliness (LF) no-go theorem that explores the idea that a system having thoughts is sufficient for it to be considered an observer. This theorem utilizes four metaphysical assumptions, three of which are thought-related, to derive LF inequalities applicable to systems exhibiting "Friendliness". The theorem also relies on assumptions about human-level AI and universal quantum computing.
analogue I-K of the Laplacian in potential theory
