A matter of choice

Sarah Tomlin

Meng Jiang, R. Machleidt, T.T.S. Kuo

A previously developed ring-diagram formalism, which substantially improves the predictions for the saturation density of nuclear matter, is employed for different choices for the single-particle (s.p.) spectrum. Three types of s.p. spectra are studied: a gap spectrum, a continuous choice, and a model-space spectrum. It is found that the choice of the s.p. spectrum has some influence on the saturation energy, but little influence on the saturation density. Thus, the main virtue of the ring-diagram approach turns out to be independent of the choice of the s.p. spectrum. We also give a clear demonstration of the strongly density-dependent ring effect and compare our results with those obtained using other many-body methods.

Bowen Liu

A brand new approach in the study of quantum experiment is introduced in this paper. The theoretical model of the delayed choice experiment is divided into two parts: micro-matter process model and spatial process model. People have been focusing only on micro-matter process. We focus on the details of the M-C (micro-to-current) space channel: the correspondence from micro-events to current events, the dependence of the validity check of the correspondence on extrinsic recursion invoking itself, the jurisdiction of current space to the micro-collapse. We show that the delayed choice experiment is just a global collapse experiment, and that the carrier of the coordinate difference in the micro-spatial channel is non-local. Consequently, it negates the existence of a common coordinate-difference carrier to micro-space and current space, and negates the connectedness between micro-space and current space. The purpose of this paper is, in terms of the delayed choice experiment, to show that the roots of the counter-intuition of quantum theory is the basic topological nature of space itself (disconnectedness) that forces microscopic matter to exhibit counterintuitive and non-causal features. We show that the delayed choice experiment supports the de-philosophizing Copenhagen interpretation.

Daniel Kleppner

Vasil Dinev Penchev

Quantum information is discussed as the universal substance of the world. It is interpreted as that generalization of classical information, which includes both finite and transfinite ordinal numbers. On the other hand, any wave function and thus any state of any quantum system is just one value of quantum information. Information and its generalization as quantum information are considered as quantities of elementary choices. Their units are correspondingly a bit and a qubit. The course of time is what generates choices by itself, thus quantum information and any item in the world in final analysis. The course of time generates necessarily choices so: The future is absolutely unorderable in principle while the past is always well-ordered and thus unchangeable. The present as the mediation between them needs the well-ordered theorem equivalent to the axiom of choice. The latter guarantees the choice even among the elements of an infinite set, which is the case of quantum information. The concrete and abstract objects share information as their common base, which is quantum as to the formers and classical as to the latter. The general quantities of matter in physics, mass and energy can be considered as particular cases of quantum information. The link between choice and abstraction in set theory allows of “Hume’s principle” to be interpreted in terms of quantum mechanics as equivalence of “many” and “much” underlying quantum information. Quantum information as the universal substance of the world calls for the unity of physics and mathematics rather than that of the concrete and abstract objects and thus for a form of quantum neo-Pythagoreanism in final analysis.

Rick P. Trebino