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documentation:language_reference:functions:newwavefunction [2016/10/10 09:41] (current)
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 +====== NewWavefunction ======
  
 +###
 +//​NewWavefunction(Nf,​ Nb, DeterminantTable)//​ creates a wave-function with $Nf$ fermions and $Nb$ bosons as a sum over determinants given by the determinant table. Determinant Table is of the form of a string of 1's and 0's followed by a prefactor, for example: //​{{"​100000",​math.sqrt(1/​2)},​ ...}//. NewWavefunction can take a forth element specifying options.
 +###
 +
 +===== Input =====
 +
 +  * Nf : Integer
 +  * Nb : Integer
 +  * Determinant Table : Table of tables containing the determinant in terms of 1's and 0's specifying occupied and unoccupied Fermions followed by a real or complex prefactor.
 +  * Possible options are
 +    * "​Name"​ a string specifying the name of the wavefunction
 +    * "​NBitsKey"​ a list of integers specifying the number of bits in the key used for the hash lookup tables. For optimal performance 2<​sup>​NBitsKey</​sup>​ should be about 1.5 times larger than the maximum number of determinants encountered in the wavefunction.
 + 
 +
 +===== Output =====
 +
 +  * psi : Wavefunction
 +
 +===== Example =====
 +
 +###
 +description text
 +###
 +
 +==== Input ====
 +<code Quanty NewWavefunction.Quanty>​
 +Nf=6
 +Nb=0
 +
 +psi0=NewWavefunction(Nf,​ Nb, {{"​100000",​math.sqrt(1/​2)},​ {"​000001",​math.sqrt(1/​2)}})
 +
 +print(psi0)
 +</​code>​
 +
 +==== Result ====
 +<file Quanty_Output NewWavefunction.out>​
 +WaveFunction:​ Wave Function
 +QComplex ​        ​= ​         0 (Real==0 or Complex==1)
 +N                =          2 (Number of basis functions used to discribe psi)
 +NFermionic modes =          6 (Number of fermions in the one particle basis)
 +NBosonic modes   ​= ​         0 (Number of bosons in the one particle basis)
 +
 +#      pre-factor ​        ​Determinant
 +   ​1 ​  ​7.071067811865E-01 ​      ​100000
 +   ​2 ​  ​7.071067811865E-01 ​      ​000001
 +</​file>​
 +
 +===== Table of contents =====
 +{{indexmenu>​.#​1}}
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