中文摘要：

文章运用经济物理学的研究方法,基于电场和磁场理论,构建了城市量场和城市质场理论模型。依据2009-2013年间成都、重庆、绵阳和德阳市的数据计算了四市2009-2013年间的量场因子、质场因子和四市之间相互作用的城市量场力和城市质场力矩,计算结果表明：城市间相互作用力的大小不等。同时,把城市抽象为圆环,引入城市的经济半径,较传统地把城市抽象为一个“点”的分析更符合实际。

英文摘要：

The paper, using the research method of econophysics and based on tile elcctromagnelic field theory, buihls a theoretic model of city quantity field and city quality field. Aecording to the data of Chengdu, Chongqing, Mianyang and Deyang from 2009 to 2013, the pape, r calculates quantity fMd factor, quality field factor and the interaction of city quantity fieht force and city quality field force between the four cities during the abow period. The results show that the interaetion force between cities is unequal. Moreover, the paper abstracts the city as a ring and introduces the economic radius of the eily, whieh is more practical analysis, compared to traditionally abstraeting the city as a ＂point＂ .