Few-body hierarchy in non-relativistic functional renormalization group equations and a decoupling theorem

• Verfasst von: Flörchinger, Stefan [VerfasserIn]
• Titel: Few-body hierarchy in non-relativistic functional renormalization group equations and a decoupling theorem
• Verf.angabe: Stefan Floerchinger
• Umfang: 15 S.
• Fussnoten: Gesehen am 27.11.2017
• Titel Quelle: Enthalten in: Nuclear physics <Amsterdam> / A
• Jahr Quelle: 2014
• Band/Heft Quelle: 927(2014), S. 119-133
• ISSN Quelle: 1873-1554
• DOI: doi:10.1016/j.nuclphysa.2014.04.013
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1565746406

Abstract

For non-relativistic quantum field theory in the few-body limit with instantaneous interactions it is shown within the functional renormalization group formalism that propagators are not renormalized and that the renormalization group equations of one-particle irreducible vertex functions are governed by a hierarchical structure. This hierarchy allows to solve the equations in the n-body sector without knowledge or assumptions about the m-body sectors where m>n.