标题： 费米面理论中的反演定理 显示英文标题

标题： An inversion theorem in Fermi surface theory

摘要： 我们证明了对于具有严格凸费米面和费米子之间短程相互作用的多费米子系统类，相互作用和非相互作用费米面之间的映射的一个微扰反演定理。 该定理赋予我们在这些模型的重整化中使用的抵消项函数 K 物理意义：当相互作用被开启时，K 可以被识别为导致费米面变形的自能的一部分。 显示英文摘要

摘要： We prove a perturbative inversion theorem for the map between the interacting and the noninteracting Fermi surface for a class of many fermion systems with strictly convex Fermi surfaces and short-range interactions between the fermions. This theorem gives a physical meaning to the counterterm function K that we use in the renormalization of these models: K can be identified as that part of the self--energy that causes the deformation of the Fermi surface when the interaction is turned on.