Matches in SemOpenAlex for { <https://semopenalex.org/work/W2788609507> ?p ?o ?g. }
Showing items 1 to 71 of
71
with 100 items per page.
- W2788609507 abstract "We investigate the applicability of Migdal--Eliashberg (ME) theory by revisiting Migdal's analysis within the dynamical mean-field theory framework. First, we compute spectral functions, the quasi-particle weight, the self energy, renormalised phonon frequency and resistivity curves of the half-filled Holstein model. We demonstrate how ME theory has a phase-transition-like instability at intermediate coupling, and how the Engelsberg--Schrieffer (ES) picture is complicated by low-energy excitations from higher order diagrams (demonstrating that ES theory is a very weak coupling approach). Through consideration of the lowest-order vertex correction, we analyse the applicability of ME theory close to this transition. We find a breakdown of the theory in the intermediate coupling adiabatic limit due to a divergence in the vertex function. The region of applicability is mapped out, and it is found that ME theory is only reliable in the weak coupling adiabatic limit, raising questions about the accuracy of recent analyses of cuprate superconductors which do not include vertex corrections." @default.
- W2788609507 created "2018-03-06" @default.
- W2788609507 creator A5055835648 @default.
- W2788609507 creator A5064908418 @default.
- W2788609507 date "2001-06-18" @default.
- W2788609507 modified "2023-10-14" @default.
- W2788609507 title "Breakdown of Migdal-Eliashberg theory in the infinite-dimensional Holstein model" @default.
- W2788609507 hasPublicationYear "2001" @default.
- W2788609507 type Work @default.
- W2788609507 sameAs 2788609507 @default.
- W2788609507 citedByCount "0" @default.
- W2788609507 crossrefType "posted-content" @default.
- W2788609507 hasAuthorship W2788609507A5055835648 @default.
- W2788609507 hasAuthorship W2788609507A5064908418 @default.
- W2788609507 hasConcept C109663097 @default.
- W2788609507 hasConcept C118615104 @default.
- W2788609507 hasConcept C121332964 @default.
- W2788609507 hasConcept C121864883 @default.
- W2788609507 hasConcept C127413603 @default.
- W2788609507 hasConcept C131584629 @default.
- W2788609507 hasConcept C132525143 @default.
- W2788609507 hasConcept C134306372 @default.
- W2788609507 hasConcept C151201525 @default.
- W2788609507 hasConcept C3079626 @default.
- W2788609507 hasConcept C33923547 @default.
- W2788609507 hasConcept C54101563 @default.
- W2788609507 hasConcept C62520636 @default.
- W2788609507 hasConcept C78519656 @default.
- W2788609507 hasConcept C80899671 @default.
- W2788609507 hasConceptScore W2788609507C109663097 @default.
- W2788609507 hasConceptScore W2788609507C118615104 @default.
- W2788609507 hasConceptScore W2788609507C121332964 @default.
- W2788609507 hasConceptScore W2788609507C121864883 @default.
- W2788609507 hasConceptScore W2788609507C127413603 @default.
- W2788609507 hasConceptScore W2788609507C131584629 @default.
- W2788609507 hasConceptScore W2788609507C132525143 @default.
- W2788609507 hasConceptScore W2788609507C134306372 @default.
- W2788609507 hasConceptScore W2788609507C151201525 @default.
- W2788609507 hasConceptScore W2788609507C3079626 @default.
- W2788609507 hasConceptScore W2788609507C33923547 @default.
- W2788609507 hasConceptScore W2788609507C54101563 @default.
- W2788609507 hasConceptScore W2788609507C62520636 @default.
- W2788609507 hasConceptScore W2788609507C78519656 @default.
- W2788609507 hasConceptScore W2788609507C80899671 @default.
- W2788609507 hasLocation W27886095071 @default.
- W2788609507 hasOpenAccess W2788609507 @default.
- W2788609507 hasPrimaryLocation W27886095071 @default.
- W2788609507 hasRelatedWork W1639781369 @default.
- W2788609507 hasRelatedWork W1900391466 @default.
- W2788609507 hasRelatedWork W190115995 @default.
- W2788609507 hasRelatedWork W1963754344 @default.
- W2788609507 hasRelatedWork W1965155909 @default.
- W2788609507 hasRelatedWork W1987958469 @default.
- W2788609507 hasRelatedWork W1998668390 @default.
- W2788609507 hasRelatedWork W2005204636 @default.
- W2788609507 hasRelatedWork W2028849478 @default.
- W2788609507 hasRelatedWork W2037047371 @default.
- W2788609507 hasRelatedWork W2039322889 @default.
- W2788609507 hasRelatedWork W2044509538 @default.
- W2788609507 hasRelatedWork W2048012173 @default.
- W2788609507 hasRelatedWork W2097850379 @default.
- W2788609507 hasRelatedWork W2337858737 @default.
- W2788609507 hasRelatedWork W2952850793 @default.
- W2788609507 hasRelatedWork W3099362594 @default.
- W2788609507 hasRelatedWork W3102755751 @default.
- W2788609507 hasRelatedWork W3102982807 @default.
- W2788609507 hasRelatedWork W3106228813 @default.
- W2788609507 isParatext "false" @default.
- W2788609507 isRetracted "false" @default.
- W2788609507 magId "2788609507" @default.
- W2788609507 workType "article" @default.