TY - GEN
T1 - Correlation and coherence in many-electron system
AU - Hsu, Jang Yu
AU - Pogorelov, Eugeny
AU - Kao, Yee Mou
PY - 2005/12/1
Y1 - 2005/12/1
N2 - The inclusion of the correlation effect in many electron system was shown in the self-consistent density functional theory to yield the virial theorem, an important relation between the kinetic and the potential energies. This provides a correspondence principle and an accuracy that could rule out mechanisms not begetting results within the error limit. The coherence effect of exchange antisymmetry for fermions can readily couple with the correlation effect to result in rich physics. We show from a Variational Quantum Monte Carlo code that in the excited states of helium atom, the triplet state of like spins tends to have less repulsive dispersion than the singlet state of opposite spins.
AB - The inclusion of the correlation effect in many electron system was shown in the self-consistent density functional theory to yield the virial theorem, an important relation between the kinetic and the potential energies. This provides a correspondence principle and an accuracy that could rule out mechanisms not begetting results within the error limit. The coherence effect of exchange antisymmetry for fermions can readily couple with the correlation effect to result in rich physics. We show from a Variational Quantum Monte Carlo code that in the excited states of helium atom, the triplet state of like spins tends to have less repulsive dispersion than the singlet state of opposite spins.
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U2 - 10.1109/NANO.2005.1500755
DO - 10.1109/NANO.2005.1500755
M3 - Conference contribution
AN - SCOPUS:33746953063
SN - 0780391993
SN - 9780780391994
T3 - 2005 5th IEEE Conference on Nanotechnology
SP - 475
EP - 479
BT - 2005 5th IEEE Conference on Nanotechnology
T2 - 2005 5th IEEE Conference on Nanotechnology
Y2 - 11 July 2005 through 15 July 2005
ER -