TY - JOUR
T1 - Scaling of entanglement at a quantum phase transition for a two-dimensional array of quantum dots
AU - Wang, Jiaxiang
AU - Kais, Sabre
PY - 2004/8
Y1 - 2004/8
N2 - The entanglement scaling behavior in a two-dimensional itinerant system was analyzed using the Hubbard model. The critical exponent ν=1 was found, which coincides well with the previous work in studying the charge gap. It was shown that, on the two sides of the critical point denoting an inherent quantum phase transition (QPT), the entanglement follows different scalings with the size, just as an order parameter does. The subtle role played by the entanglement in QPT as a fungible physical resource was revealed by the this shown fact.
AB - The entanglement scaling behavior in a two-dimensional itinerant system was analyzed using the Hubbard model. The critical exponent ν=1 was found, which coincides well with the previous work in studying the charge gap. It was shown that, on the two sides of the critical point denoting an inherent quantum phase transition (QPT), the entanglement follows different scalings with the size, just as an order parameter does. The subtle role played by the entanglement in QPT as a fungible physical resource was revealed by the this shown fact.
UR - https://www.scopus.com/pages/publications/19544364448
U2 - 10.1103/PhysRevA.70.022301
DO - 10.1103/PhysRevA.70.022301
M3 - 文章
AN - SCOPUS:19544364448
SN - 1050-2947
VL - 70
SP - 022301-1-022301-4
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 2
M1 - 022301
ER -