Physics – Quantum Physics
Scientific paper
2007-10-31
Phys. Rev. A 76, 060304(R) (2007)
Physics
Quantum Physics
4 pages, 5 eps figures
Scientific paper
We have combined the idea of renormalization group and quantum information theory. We have shown how the entanglement or concurrence evolve as the size of the system being large, i.e. the finite size scaling is obtained. Moreover, It introduces how the renormalization group approach can be implemented to obtain the quantum information properties of a many body system. We have obtained the concurrence as a measure of entanglement, its derivatives and their scaling behavior versus the size of system for the one dimensional Ising model in transverse field. We have found that the derivative of concurrence between two blocks each containing half of the system size diverges at the critical point with the exponent which is directly associated with the divergence of the correlation length.
Jafari Raheleh
Kargarian Mehdi
Langari A.
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