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Relating correlation measures: The importance of the energy gap

Abstract:

The concept of correlation is central to all approaches that attempt the description of many-body effects in electronic systems. Multipartite correlation is a quantum information theoretical property that is attributed to quantum states independent of the underlying physics. In quantum chemistry, however, the correlation energy (the energy not seized by the Hartree-Fock ansatz) plays a more prominent role. We show that these two different viewpoints on electron correlation are closely related...

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Publication status:
Published
Peer review status:
Peer reviewed

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
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Name:
Engineering and Physical Sciences Research Council
Funding agency for:
Schilling, C
Grant:
EP/P007155/1
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Name:
German Science Foundation
Grant:
MA 6787/1-1
More from this funder
Name:
Hellenic Ministry of Education
Grant:
MIS:5002409
More from this funder
Name:
Oxford Martin Programme on Bio-Inspired Quantum Technologies
Publisher:
American Institute of Physics
Journal:
Physical Review A: Atomic, Molecular and Optical Physics More from this journal
Volume:
95
Issue:
3
Publication date:
2017-03-01
Acceptance date:
2017-03-07
DOI:
ISSN:
1094-1622
Keywords:
Pubs id:
pubs:687274
UUID:
uuid:0585292b-e70e-4a2d-838b-de76033044a6
Local pid:
pubs:687274
Source identifiers:
687274
Deposit date:
2017-04-01

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