Can absolute freedom save quantum mechanics?

Does Quantum Mechanics Save Free Will?

According to the widely accepted opinion, classical (statistical) physics does not support objective indeterminism, since the statistical laws of classical physics allow a deterministic hidden background, while --- as Arthur Fine writes polemizing with Grünbaum --- "{\sl the antilibertarian position finds little room to breathe in a statistical world if we take laws of the quantum theory as exemplars of the statistical laws in such a world. So, it appears that, contrary to what Grünbaum claims, the libertarians' 'could have done otherwise' does indeed find support from indeterminism if we take…

The Completeness of Quantum Mechanics and the Determinateness and Consistency of Intersubjective Experience: Wigner's Friend and Delayed Choice

Recent experiments (gedanken or otherwise) and theorems in quantum mechanics (QM), such as new iterations on Wigner's friend and delayed choice, have led many people to claim that QM is not compatible with determinate and intersubjectively consistent experience (what some call absoluteness of observed events), such as experiences of experimental outcomes. In the case of delayed choice the tension is between our experience of free will and a possible "superdeterminism" at work in QM. At the very least, some have suggested that the only way to save absoluteness of observed events, is to give up …

宇宙封锁：当退相干拯救宇宙免于隧道效应

Cosmic Lockdown: When Decoherence Saves the Universe from Tunneling

本文研究了退相干如何抑制量子隧穿，通过环境监控稳定虚假真空占据，从而实现宇宙的局部极小值锁定。

Background freedom leads to many-worlds with local beables and probabilities

I argue that background freedom in quantum gravity automatically leads to a dissociation of the quantum state into states having a classical space. That is, interference is not completely well-defined for states with different space geometries, even if their linear combination is. Interference of states with different space geometry is still allowed at small scales, but precluded at macro-scales. Macrostates, including measuring devices, appear classical. The distribution of space geometries automatically gives the Born rule. The dissociation entails a kind of absolute decoherence, making the …

Remarks About the Relationship Between Relational Physics and a Large Kantian Component of the Laws of Nature

Relational mechanics is a reformulation of mechanics (classical or quantum) for which space is relational. This means that the configuration of an $N$-particle system is a shape, which is what remains when the effects of rotations, translations, and dilations are quotiented out. This reformulation of mechanics naturally leads to a relational notion of time as well, in which a history of the universe is just a curve in shape space without any reference to a special parametrization of the curve given by an absolute Newtonian time. When relational mechanics (classical or quantum) is regarded as f…

利用超经典 GHZ 态期望值的量子密钥分发

Quantum Key Distribution using Expectation Values of Super-classical GHZ States

提出一种基于最大纠缠 GHZ 态最优期望值和连续可变角度的量子密钥分发方案，支持 Alice 到 Bob 分发及与 Charlie 共享，并可通过绝对违背确定性检测窃听者。