Gruppo di Fisica Statistica

Gruppo 106, Institut Jean Lamour

                     
Home
Dove
Personale
Pubblicazioni
Seminari
Cronologico
per Oratore
Workshops
Rencontres
Scuole
Internazionale
Gruppo di Lavoro
Posizioni
Insegnamento

Seminario del gruppo

Random quantum magnets in d>=2 dimensions: critical behavior and entanglement entropy
Ferenc Iglói
Wigner Research Center (Budapest)
giovedì 13 giugno 2013 , 10h25
Salle de séminaire du groupe de Physique Statistique

Using the strong disorder renormalization group method, we study numerically the quantum critical behavior (i.e. at T=0) of the random transverse-field Ising model in d=2,3 and 4 dimensions. In all cases the critical behavior is controlled by an infinite disorder fixed point and the critical exponents in the bulk, as well as at a free surface, corner and edge are disorder independent. The entanglement entropy satisfies the area law to which there are universal logarithmic corrections at the critical point due to corners. I. A. Kov\'acs and F. Igl\'oi, Phys. Rev. B83, 174207 (2011); J. Phys.: Condens. Matter 23, 404204 (2011); EPL 97, 67009 (2012); Phys. Rev. B 87, 024204 (2013)

File PDF


Inizio pagina