Re: 10 questions on QM postulates

Arnold Neumaier wrote:

> In general, the domain of the adjoint can be larger or smaller.
> For example, the adjoint of an annihilation operator has only
> the zero vector in its domain.

Could you explain this a little bit? Is the point that the usual Fock
states over a one-particle basis are not real Hilbert-space vectors but
live in the larger space of "generalized" funcions, i.e. the dual of
the nucleon space of the G'elfand triple?

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Hendrik van Hees Texas A&M University
Phone: +1 979/845-1411 Cyclotron Institute, MS-3366
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