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3
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Sum of two density matrices: $\rho=p_1\rho_1+p_2\rho_2$
Suppose we have
$$\rho=p_1\rho_1+p_2\rho_2$$
Where $\rho_1$ and $\rho_2$ are density matrices with $p_1+p_2=1$
I'm trying to show this is also a density matrix
If we let
$$\rho_1=\sum_i^n ...
4
votes
0answers
67 views
Shape of the state space under different tensor products
I am currently studying generalized probabilistic theories. Let me roughly recall how such a theory looks like (you can skip this and go to "My question" if you are familiar with this).
Recall: In a ...
