http://zebu.uoregon.edu/~js/glossar...eld_theory.html

Unified field theory, in particle physics, is an attempt to describe all fundamental forces and the relationships between elementary particles in terms of a single theoretical framework. Forces can be described by fields that mediate interactions between separate objects. In the mid-19th century James Clerk Maxwell formulated the first field theory in his theory of electromagnetism. Then, in the early part of the 20th century, Albert Einstein developed general relativity, a field theory of gravitation. Later, Einstein and others attempted to construct a unified field theory in which electromagnetism and gravity would emerge as different aspects of a single fundamental field. They failed, and to this day gravity remains beyond attempts at a unified field theory.


統一場論﹐在粒子物理學中﹐是一種所有基本粒子間作用力及互相關係單一的理論結構。作用力可以被描述成物體間造成交互作用的場群。19世紀中﹐James
Clerk Maxwell在他的電磁學裡寫下第一個場論(電磁互生的馬克思威方程式)。而後﹐在20世紀初﹐愛因斯坦推導了廣義相對論﹐即重力場論。之後﹐愛因斯坦與他普林斯敦的同事嘗試去建構統一場論﹐一個嶄新理論可以把電磁場與重力場統合在一個基本架構下不同角度的特例。他們失敗了到今天為止﹐重力場仍然無法被統合在統一場論內。

說穿了﹐就是微小粒子與巨觀物體的作用力以同一場論來描述。

愛因斯坦只不過是想把牛頓三條古典力學定律(巨觀物體)﹐與馬克斯威的七條電磁學公式(微小粒子)統一在一個新理論下。把它叫統一場論。