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Multiple choice
For Ising anyons with sectors
{
1
,
σ
,
ψ
}
\{1, \sigma, \psi\}
{
1
,
σ
,
ψ
}
, the lesson gives the quantum dimensions
d
σ
=
2
d_\sigma = \sqrt{2}
d
σ
=
2
,
d
ψ
=
1
d_\psi = 1
d
ψ
=
1
,
d
1
=
1
d_1 = 1
d
1
=
1
. What is the total quantum dimension
D
=
∑
a
d
a
2
D = \sqrt{\sum_a d_a^2}
D
=
∑
a
d
a
2
?
2
\sqrt{2}
2
1
2
4
Check answer