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用重整化群方法分析了有外场存在时的界面生长行为,得到了非平庸的稳定的固定点,固定点粗糙指数x和动力学标度指数z。结果表明,外场趋于使生长表面平滑并且不破坏伽利略不变性。The dynamics of a growing interface with an external field is investigated. The nontrivial fixed point is found and the exponents are calculated. The result shows that the external field tends to smoothen the interface and does not break the Galilean invariance.
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