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Variational structure of Luttinger–Ward formalism and bold diagrammatic expansion for Euclidean lattice field theory
The Luttinger–Ward functional was proposed more than five decades ago and has been used to formally justify most practically used Green’s function methods for quantum many-body systems. Nonetheless, the very existence of the Luttinger–Ward functional has been challenged by recent theoretical and num...
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| Pubblicato in: | Proc Natl Acad Sci U S A |
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| Autori principali: | , |
| Natura: | Artigo |
| Lingua: | Inglês |
| Pubblicazione: |
National Academy of Sciences
2018
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| Soggetti: | |
| Accesso online: | https://ncbi.nlm.nih.gov/pmc/articles/PMC5877950/ https://ncbi.nlm.nih.gov/pubmed/29463752 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1073/pnas.1720782115 |
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