论文标题
Landau-Fermi液体无准粒子
Landau-Fermi liquids without quasiparticles
论文作者
论文摘要
通常认为，每当状态的相互作用的单粒子密度在费米表面上与$δ$样分量形成相关的单粒子密度时，Landau-fermi液体理论通常会保持。在这里，我们表明，在更一般的情况下，实际上可以实现微观依据，即使相干准粒子完全缺失，并且由于自动能力中极点奇异性，状态的相互作用的单粒子密度消失了。
Landau-Fermi liquid theory is conventionally believed to hold whenever the interacting single-particle density of states develops a $δ$-like component at the Fermi surface, which is associated with quasiparticles. Here we show that a microscopic justification can be actually achieved under more general circumstances, even in case coherent quasiparticles are totally missing and the interacting single-particle density of states vanishes at the chemical potential as consequence of a pole singularity in the self-energy.
