Задачи по квантовой механике. Часть 2. Корнев А.С. - 64 стр.

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n = 2 Z
µ
z = r cos θ
hr |2lmi = f
2l
(r)Y
lm
(θ, ϕ)
n = 2
h210|z |200i = h200|z |210i =
= h10|cos θ |00i
Z
0
f
20
(r)f
21
(r)r
3
dr
= 3
a
0
Z
.
¤
ˆ
G
G G
0
hG
0
|
ˆ
F |Gi
Φ
p
(r) = (2π})
3/2
e
ipr/}
r
pp
0
= hp|
ˆ
r |p
0
i =
1
(2π})
3
Z
exp
·
i
}
pr
¸
r exp
·
i
}
p
0
r
¸
d
3
r =
=
1
(2π})
3
(i}
p
0
)
Z
exp
·
i
}
(p
0
p)r
¸
d
3
r
|
{z }
(2π})
3
δ(p
0
p)
= i}
p
0
δ(p
0
p).
r
pp
0
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                                                                           z = r cos θ
                                                                                                                                :
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        h210| z |200i = h200| z |210i =

                                  = h10| cos θ |00i
                                                           Z       ∞
                                                                                        3
                                                                       f20 (r)f21 (r)r dr = −3
                                                                                               
                                                                                                         
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