Observation Effect in the Double-Slit Experiment: Empirical Test of the Mainstream Interpretation and an Alternative Model Based on Energy Conservation

Abstract

Abstract The double-slit interference experiment is a core experiment in quantum mechanics. The phenomenon that observation changes the result has long been explained by the Copenhagen Interpretation as wavefunction collapse—a diffused wave contracts to a point particle upon measurement. While successful in probabilistic prediction, this interpretation faces three long-overlooked empirical difficulties in its physical picture: (1) Energy conservation: How can energy distributed over a large region instantly concentrate at a single point during collapse? (2) Total energy drop on the screen: Experimental data show that the total energy reaching the screen is significantly lower with a detector present than without, which the collapse model cannot accommodate. (3) Continuous effect of measurement strength: When detection strength is adjusted from weak to strong, interference fringes fade continuously instead of vanishing abruptly at a threshold, accompanied by a simultaneous continuous drop in total energy. All these contradict the expectation of instant collapse. This paper systematically reviews the experimental facts filtered out by mainstream narratives, then proposes an alternative model fully based on energy conservation: A photon can be regarded as an entire diffused energy cluster; the double-slit barrier splits it into two branch energies, which superimpose freely to produce interference fringes. The detector does not cause collapse but injects a probing energy field into the space behind the slits, which physically isolates the two branches and destroys the interference condition. This model relies on neither wavefunction collapse nor instantaneous action at a distance, and naturally predicts that stronger detection leads to more complete isolation, dimmer fringes, and lower total screen energy—consistent with experiments including the 2025 MIT study. This paper does not attempt to overthrow the mathematical framework of quantum mechanics, but points out that the Copenhagen Interpretation is a historically conditioned physical picture with empirical vulnerabilities. The energy cluster model proposed in this paper is superior in empirical completeness and is suitable as an alternative framework for physics education and engineering intuition. 摘要 双缝干涉实验是量子力学的核心实验之一,其“观测改变结果”的现象长期被哥本哈根诠释解释为“波函数坍缩”,即一个弥散的波在测量瞬间收缩为一个粒子。该解释虽然在概率预测上取得了成功,但在物理图像上存在三个长期被忽略的实证困难:(1)能量守恒问题:坍缩过程中,原本分布在较大空间范围内的能量如何瞬间集中于一点?(2)观测后屏幕总能量下降:实验数据表明,开启探测器后,抵达屏幕的总能量显著低于无观测状态,而坍缩模型无法容纳这一能量损失;(3)观测强度的连续效应:当探测能量从弱到强调节时,干涉条纹并非在某一阈值处突变消失,而是连续淡化,同时屏幕总能量同步连续下降。这些现象均与“突变坍缩”的预期不符。 本文首先系统回顾上述被主流叙述过滤的实验事实,随后提出一个完全基于能量守恒的替代模型:光子可视为一整块弥散的能量团,双缝挡板将其切分为两股分支能量,两支分支自由叠加从而产生干涉条纹;探测器的作用并非导致“坍缩”,而是向缝后空间注入探测能量场,这一外来能量在物理上隔离了两股分支能量,进而破坏干涉条件。该模型不依赖波函数坍缩、不涉及瞬时超距作用,并且天然预言:观测能量越强,隔离越彻底,条纹越淡、屏幕总能量越低,这一预言与MIT 2025年等实验数据高度吻合。 本文不试图推翻量子力学的数学框架,而是指出:哥本哈根诠释是在特定历史条件下形成的、存在实证漏洞的物理图像;本文提出的能量团模型在实证完整性上更具优势,适合在物理教学与工程直观中作为替代图像使用。