Quantum field theory (QFT) provides a powerful framework for describing fundamental physical phenomena at the smallest scales, yet its application to macroscopic observations remains a significant challenge. This paper explores the development of a novel multi-scale quantum field theory (MSQFT) framework, designed to seamlessly integrate quantum mechanics with observations, offering a pathway to understanding fundamental physical phenomena. The core mechanism centers around an "Scale-Aware Resonance" algorithm, which dynamically adjusts the complexity of the model based on the observed scale of the system, facilitating a transition from microscopic to macroscopic realms. This approach seeks to overcome limitations inherent in conventional QFT models. The work presents a conceptual model and initial implementation of this algorithm, highlighting its potential for deeper insights into various physical systems. The goal is to create a more comprehensive and adaptable representation of quantum phenomena, enabling a deeper understanding of the relationship between scales.
We formulate Bohmian mechanics (BM) such that the main objects of concern are macroscopic phenomena, while microscopic particle trajectories only play an auxiliary role. Such a formulation makes it easy to understand why BM always makes the same measurable predictions as standard quantum mechanics (QM), irrespective of the details of microscopic trajectories. Relativistic quantum field theory (QFT) is interpreted as an effective long-distance theory that at smaller distances must be replaced by some more fundamental theory. Analogy with condensed-matter physics suggests that this more fundamental theory could have a form of nonrelativistic QM, offering a simple generic resolution of an apparent conflict between BM and relativistic QFT.
In this report we discuss three aspects: 1) Semiclassical gravity theory (SCG): 4 levels of theories describing the interaction of quantum matter with classical gravity. 2) Alternative Quantum Theories: Discerning those which are derivable from general relativity (GR) plus quantum field theory (QFT) from those which are not 3) Gravitational Decoherence: derivation of a master equation and examination of the assumptions which led to the claims of observational possibilities. We list three sets of corresponding problems worthy of pursuit: a) Newton-Schrödinger Equations in relation to SCG; b) Master equation of gravity-induced effects serving as discriminator of 2); and c) Role of gravity in macroscopic quantum phenomena.