中文摘要：

运用发展的Ford-Kac-Mazur方法对一维β-Fermi-Pasta-Ulam纳米单原子链的运动方程进行了简化.通过数值计算,对系统在非线性相互作用下的傅里叶热传输定律进行了修正,同时对奇偶原子数晶格系统的局域能量密度进行了比较,发现奇数原子系统中明显存在离散呼吸子.

英文摘要：

The motion equation β-Fermi-Pasta-Ulam nanochain was simplified into an one-dimensional by using extended Ford,Kac and Mazur（FKM）formation.Based on numerical calculations,the law of Fourier for heat conductivity of the system was modified.Meanwhile,by comparing the different local energy densities in the lattices of odd-even size system,it is discovered that discrete breathers obviously exist in the odd chain.