multiple quantum particles

[homology]

So why is it that if you have a system with two distinguisable particles why is their state vector written as

|psi>=|psi_1>|psi_2>

what's this product? Is this product still "in" the original hilbert space?

Kevin

[selfAdjoint]

I think the state is in the tensor product of the particle spaces.

[homology]

Huh, is that so, I'll have to play around with that idea and see where it takes me. Thanks SelfAdjoint.

Kevin

[reilly]

The state |a>|b> is also called a "direct product state", and this basic idea is discussed in most books on linear algebra.
Regards,
Reilly Atkinson