- Tytuł:
- Order in Quantum Compass and Orbital e_{g} Models
- Autorzy:
-
Czarnik, P.
Dziarmaga, J.
Oleś, A. - Powiązania:
- https://bibliotekanauki.pl/articles/1029762.pdf
- Data publikacji:
- 2018-03
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
75.10.Jm
05.10.Cc
05.70.Fh
75.25.Dk - Opis:
- We investigate thermodynamic phase transitions in the compass model and in e_{g} orbital model on an infinite square lattice by variational tensor network renormalization (VTNR) in imaginary time. The onset of nematic order in the quantum compass model is estimated at _{c}/J=0.0606(4). For the e_{g} orbital model one finds: (i) a very accurate estimate of _{c}/J=0.3566± 0.0001 and (ii) the critical exponents in the Ising universality class. Remarkably large difference in frustration results in so distinct values of _{c}, while entanglement influences the quality of _{c} estimation.
- Źródło:
-
Acta Physica Polonica A; 2018, 133, 3; 359-361
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł