We consider RVB state as a variational estimate for the ground state of Heisenberg antiferromagnet in square lattice. We present numerical calculation of energy, spin-spin correlation function and spin excitation spectrum. We show, that the quantum flactuations reduce of magnetization respect to Neel order. Our results are in good agreement with other methods such as spin-wave calculation and series expansions.
Nourbakhsh,Z. , Shahbazi,F. and Jafari,S. (2019). Optimized resonating valence bond state in square lattice: correlations & excitations. Iranian Journal of Physics Research, 9(2), 131-136.
MLA
Nourbakhsh,Z. , , Shahbazi,F. , and Jafari,S. . "Optimized resonating valence bond state in square lattice: correlations & excitations", Iranian Journal of Physics Research, 9, 2, 2019, 131-136.
HARVARD
Nourbakhsh Z., Shahbazi F., Jafari S. (2019). 'Optimized resonating valence bond state in square lattice: correlations & excitations', Iranian Journal of Physics Research, 9(2), pp. 131-136.
CHICAGO
Z. Nourbakhsh, F. Shahbazi and S. Jafari, "Optimized resonating valence bond state in square lattice: correlations & excitations," Iranian Journal of Physics Research, 9 2 (2019): 131-136,
VANCOUVER
Nourbakhsh Z., Shahbazi F., Jafari S. Optimized resonating valence bond state in square lattice: correlations & excitations. Dear user; Recently we have changed our software to Sinaweb. If you had already registered with the old site, you may use the same USERNAME but you need to change your password. To do so at the first use, please choose, 2019; 9(2): 131-136.
