Physics – Quantum Physics
Scientific paper
2001-09-07
Int.J.Theor.Phys. 41 (2002) 1043-1052
Physics
Quantum Physics
13 pages, plain Tex. In the revised version, section 3 contains new calculations
Scientific paper
A proof is given that an invertible and a unitary operator can be used to reproduce the effect of a q-deformed commutator of annihilation and creation operators. In other words, the original annihilation and creation operators are mapped into new operators, not conjugate to each other, whose standard commutator equals the identity plus a correction proportional to the original number operator. The consistency condition for the existence of this new set of operators is derived, by exploiting the Stone theorem on 1-parameter unitary groups. The above scheme leads to modified equations of motion which do not preserve the properties of the original first-order set for annihilation and creation operators. Their relation with commutation relations is also studied.
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