Normal and anti-normal ordered expressions for annihilation and creation operators
We obtain normal and anti-normal order expressions of the number operator to the power k by using the commutation relation between the annihilation and creation operators. We use those expressions to obtain general formulae for functions of the number operator in normal and anti-normal order.
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| Principais autores: | , , |
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| Formato: | Digital revista |
| Idioma: | English |
| Publicado em: |
Sociedad Mexicana de Física
2006
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| Acesso em linha: | http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1870-35422006000100002 |
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| Resumo: | We obtain normal and anti-normal order expressions of the number operator to the power k by using the commutation relation between the annihilation and creation operators. We use those expressions to obtain general formulae for functions of the number operator in normal and anti-normal order. |
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