Exchange-correlation hole

  • Thread starter saray1360
  • Start date
  • #1
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Hi,

Why do we say that the exchange correlation hole is "positive" in a medium like a homogeneous electron gas, while all the particles are electrons with negative charge.

Is only the deficit of the electron mean positive charge?

Regards,
 

Answers and Replies

  • #2
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Basically, yes. You can think of it as in the jellium model, where there is a uniform positive background charge, and a removal of electron charge by the exchange-correlation hole leaves behind just the positive background charge, making the xc hole positive.
 

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