Unified static renormalization-group treatment of finite-temperature crossovers close to a quantum critical point (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Unified static renormalization-group treatment of finite-temperature crossovers close to a quantum critical point (Articolo in rivista) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

Alternative label

• Mercaldo, MT; De Cesare, L; Rabuffo, I; D'Auria, AC (2007)
  Unified static renormalization-group treatment of finite-temperature crossovers close to a quantum critical point
  
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Mercaldo, MT; De Cesare, L; Rabuffo, I; D'Auria, AC (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 75 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Univ Salerno, Dipartimento Fis ER Caianiello, I-84081 Baronissi, Salerno, Italy; CNISM, Unita Salerno, I-84081 Baronissi, Salerno, Italy; Univ Naples Federico II, Dipartimento Sci Fis, I-80125 Naples, Italy; CNR, INFM, Coherentia, I-80125 Naples, Italy (literal)

Titolo

• Unified static renormalization-group treatment of finite-temperature crossovers close to a quantum critical point (literal)

Abstract

• A nonconventional renormalization-group (RG) treatment close to and below four dimensions is used to explore, in a unified and systematic way, the low-temperature properties of a wide class of systems in the influence domain of their quantum critical point. The approach consists in a preliminary averaging over quantum degrees of freedom and a successive employment of the Wilsonian RG transformation to treat the resulting effective classical Ginzburg-Landau free energy functional. This allows us to perform a detailed study of criticality of the quantum systems under study. The emergent physics agrees, in many aspects, with the known quantum critical scenario. However, a richer structure of the phase diagram appears with additional crossovers which are not captured by the traditional RG studies. In addition, in spite of the intrinsically static nature of our theory, predictions about the dynamical critical exponent, which parametrizes the link between statics and dynamics close to a continuous phase transition, are consistently derived from our static results. (literal)

Prodotto di

• Proprietà magnetiche, magnetoelastiche e magnetoresistive di nanocompositi e film sottili (MD.P04.008.001) (Modulo)

Autore CNR

• ALVARO CARAMICO D'AURIA (Unità di personale esterno)

Insieme di parole chiave

• Keywords of "Unified static renormalization-group treatment of finite-temperature crossovers close to a quantum critical point" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• ALVARO CARAMICO D'AURIA (Unità di personale esterno)

Prodotto

• Proprietà magnetiche, magnetoelastiche e magnetoresistive di nanocompositi e film sottili (MD.P04.008.001) (Modulo)

Insieme di parole chiave di

• Keywords of "Unified static renormalization-group treatment of finite-temperature crossovers close to a quantum critical point" (Insieme di parole chiave)