量子力学百年:从微观量子结构到宏观量子效应
The centenary of quantum mechanics:from microscopic quantum structures to macroscopic quantum effects
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摘要:
20世纪理论物理学的发展主题为量子化,它是物理学“纵向层次跨越”与“横向范式演进”交汇的枢纽:在纵向维度上,量子化是跨越物质层次组元、解构物理规律的基本工具;多体系统量子化打破还原论单一模式,关注量子效应累计的宏观行为;在横向维度上,它推动了物理学从(经典)决定论到(量子)概率论的范式革命,确立了自然界随机性的微观量子本源。从科学发展逻辑的角度讲,量子力学诞生百年间历经三次量子化阶段:第一次(1925—1920年代末)将单粒子自由度量子化为不可对易算符,建立量子力学理论的基础框架;第二次(1930—1970年代末)将量子化拓展至多体系统与场,结合相对论建立量子场论。它解释了超导、超流等宏观量子现象,并引入序参量与自发对称性破缺的概念;第三次(1980年代后)对宏观序参量再次量子化,展示了宏观尺度上的量子相干效应,催生了超导量子计算等新领域。可以说,量子化不仅拓展了人类对世界的认知,而且重塑了现代技术文明根基,目前正在支撑众多高新技术体系加速演进。
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关键词:
- 量子化 /
- 微观量子结构 /
- 宏观量子现象 /
- 宏观量子效应(隧穿) /
- 三次(序参量)量子化 /
- 自发对称性破缺
Abstract:The critical theme of development in theoretical physics in the 20th century was quantization. It also serves as the intersection hub of“vertical hierarchical leap”and “horizontal paradigm evolution”in physics. In the vertical dimension, quantization is a basic tool for crossing the components of material levels and deconstructing physical laws. The quantization of many-body systems breaks the singular paradigm of reductionism, and focuses on the macroscopic behavior resulting from the accumulation of quantum effects. In the horizontal dimension, it promotes the paradigm revolution of physics from classical determinism to quantum probability theory, establishing the microscopic origin of randomness in nature. From the perspective of the logic of scientific development, quantum mechanics has passed through three quantization stages over the past century since its birth. The first stage (1925 to the late 1920s) quantized the degrees of freedom of single particles into non-commuting operators, laying the basic framework of quantum mechanics. The second stage (1930s to 1970s) extended quantization to many-body systems and light fields, establishing quantum field theory combined with relativity. It explained macroscopic quantum phenomena such as superconductivity and superfluidity, and introduced the concepts of order parameter and spontaneous symmetry breaking. The third stage (after the 1980s) realized the re-quantization of macroscopic order parameters, demonstrating quantum coherence effects at the macroscopic scale and spawning new fields such as superconducting quantum computing. It can be said that quantization has not only expanded human understanding of the world but also reshaped the foundation of modern technological civilization. Currently, it is supporting the accelerated evolution of numerous hightech systems.
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