强关联电子系统中的量子场论

Researchonelectronicsystemsincondensedmatterphysicsisatpresentdevelopingveryrapidly,wherethemainfocusischangingfromthe"single-particleproblem"tothe"many-particleproblem".Thatis,themainresearchinterestchangedfromphenomenathatcanbeunderstoodinthesingleparticlepicture,as,forexample,inbandtheory,tophenomenathatariseowingtotheinteractionbetweenmanyelectrons.