Naslov
Probing Quantum Frustrated Systems via Factorization of the Ground State

Autori
Giampaolo, Salvatore M. ; Adesso, Gerardo ; Illuminati, Fabrizio

Izvornik
Physical Review Letters (0031-9007) 104 (2010), 20; 207202, 4

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, ostalo

Ključne riječi
frustration

Sažetak
The existence of definite orders in frustrated quantum systems is related rigorously to the occurrence of fully factorized ground states below a threshold value of the frustration. Ground-state separability thus provides a natural measure of frustration: strongly frustrated systems are those that cannot accommodate for classical-like solutions. The exact form of the factorized ground states and the critical frustration are determined for various classes of nonexactly solvable spin models with different spatial ranges of the interactions. For weak frustration, the existence of disentangling transitions determines the range of applicability of mean-field descriptions in biological and physical problems such as stochastic gene expression and the stability of long-period modulated structures.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA