简并么正费米气体的能量密度关联函数
Low energy density correlation function of the degenerate unitary Fermi gas from epsilon expansion
摘要:
利用$ε$展开式,在激发能低于准粒子阈值的情况下,用$ε$计算了简并费米气体在无限散射长度下的密度关联函数.导出了低能动力学结构函数的表达式。
英文摘要:
Using $ε$ expansion proposed in \cite{Nishida:2006br} we calculate density correlation function of the degenerate Fermi gas at infinite scattering length to next-to-leading order in $ε$ for excitation energies below quasi particle threshold. An expression for the low energy dynamic structure function is derived.
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