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References:
Chiba, Imai, HA,
MNRAS. 377, 269 (2007)
Imai, Chiba, HA,
Phys. Rev. Lett. 98, 201102 (2007)
5
Einstein-Infeld-Hoffman の運動方程式 (G=c=1)
d2xK
dt2=
∑
A6=K
rAKmA
r3AK
[1−4
∑
B 6=K
mB
rBK
−∑
C 6=A
mC
rCA
(1− rAK · rCA
2r2CA
)
+v2K + 2v2
A − 4vA · vK − 3
2
(vA · rAK
rAK
)2 ]
−∑
A6=K
(vA − vK)mArAK · (3vA − 4vK)
r3AK
+7
2
∑
A6=K
∑
C 6=A
rCAmAmC
rAKr3CA
23
初速度をパラメタ化~v1 = k~V + ξ
m
`3(~V · ~̀)~̀
~v2 = k~V + ξm
`3(~V · ~̀)~̀
~v3 = ~V
k = −1
2+ α|~V |2 + β
m
`27
References:
Chiba, Imai, HA,
MNRAS. 377, 269 (2007)
Imai, Chiba, HA,
Phys. Rev. Lett. 98, 201102 (2007)
32
L =1
2
∑
AmAv2
A +1
2
∑
A
∑
B 6=A
mAmB
rAB+
1
8
∑
AmAv4
A
−1
4
∑
A
∑
B 6=A
mAmB
rAB[7(vA · vB)− 6v2
A + (vA · nAB)(vB · nAB)]
−1
2
∑
A
∑
B 6=A
∑
C 6=A
mAmBmC
rABrAC(1)
34