Regularity of interacting nonspherical Fermi surfaces: The full self-energy
نویسندگان
چکیده
منابع مشابه
Regularity of Interacting Nonspherical Fermi Surfaces: The Full Self–Energy
Regularity of the deformation of the Fermi surface under short-range interactions is established to all orders in perturbation theory. The proofs are based on a new classification of all graphs that are not doubly overlapping. They turn out to be generalized RPA graphs. This provides a simple extension to all orders of the regularity theorem of the Fermi surface movement proven in [FST2]. Model...
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Regularity of the deformation of the Fermi surface under short-range interactions is established for all contributions to the RPA self–energy (it is proven in an accompanying paper that the RPA graphs are the least regular contributions to the self–energy). Roughly speaking, the graphs contributing to the RPA self– energy are those constructed by contracting two external legs of a four–legged g...
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ژورنال
عنوان ژورنال: Communications on Pure and Applied Mathematics
سال: 1999
ISSN: 0010-3640,1097-0312
DOI: 10.1002/(sici)1097-0312(199903)52:3<273::aid-cpa1>3.0.co;2-1