晶格上大质量展开的连续统标度：Delta展开在非谐振子中的应用
Continuum Scaling from Large Mass Expansion on the Lattice: Delta Expansion Applied to the Anharmonic Oscillator
摘要：
通过引入参数δ，扩大了强耦合下晶格非谐振子的标度区。通过δ展开，研究了在大晶格间距下有效的级数展开法在连续极限下的质量间隙计算。我们表明，膨胀的质量参数M恢复的跳跃参数β的标度行为，并允许精确近似的质量间隙。
英文摘要：
We dilate the scaling region of the lattice anharmonic oscillator at strong coupling by introducing the parameter delta. Performing expansion in delta, the calculation of the mass gap in the continuum limit via the series expansion effective at large lattice spacings is then studied. We show that the dilation on the mass parameter M recovers the scaling behavior of the hopping parameter beta and allows for precise approximation of the mass gap.
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