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NumberSum

NumberSum(const List<integer> sites) -> OperatorFermiNamed​

Returns the sum of fermionic number operators ∑i∈sitesni\sum_{i \in \mathrm{sites}} n_{i} with support on the specified sites.

Parameters​

  • sites: The sites where the operator acts.

Example​

NumberSum([0,1,2])*Fbit("0110") // Returns (2 + 0i)|0110>