1 11ème cours de Mécanique Analytique (25/11/2010)
10
• 2.3 Le principe variationnel d’Hamilton modifié
(2.11)
(2.12)
(2.13)
11 • 2.4 Transformations canoniques (2.19) (2.20) (2.21) (2.22)
12 • 2.4 Transformations canoniques (2.23) (2.24) (2.25a) (2.25b) (2.25c) (2.19)
13 • 2.4 Transformations canoniques (2.26) (2.27) (2.28a) (2.28b) (2.28c) (2.19)
14 • 2.4 Transformations canoniques (2.29) (2.30a) (2.30b) (2.30c)
15 • 2.4 Transformations canoniques (2.31) (2.32a) (2.32b) (2.32c)
16 • 2.4 Transformations canoniques (2.19) (2.20) (2.21) (2.22)
17
• 2.5 Exemples de transformations canoniques
(2.33) (2.34a) (2.34b) (2.34c) (2.36a) (2.36b) (2.36c) (2.35)
18
• 2.5 Exemples de transformations canoniques
(2.37) (2.38) (2.39a) (2.39b) (2.40a) (2.40b) (2.41)
19
• 2.5 Exemples de transformations canoniques
(2.42a) (2.42b)
(2.41)
(2.43)
20
• 2.6 L’approche symplectique des transformations canoniques
(2.45)
(2.46)
(2.47)
21
• 2.6 L’approche symplectique des transf. canoniques
(2.47)
(2.49a) (2.49b) (2.49c) (2.49d)
22
• 2.6 L’approche symplectique des transf. canoniques
J
ij= 1
i,j-f
[1if,f+1 j2f]- 1
i-f,j
[f+1i2f,1 jf]J
ij= Jji
= 1
j,i-f
[1jf,f+1 i2f]- 1
j-f,i
[f+1j2f,1 if]= - (1
j-f,i
[f+1j2f,1 if] - 1
j,i-f
[1jf,f+1 i2f])= - (1
i,j-f
[1if,f+1 j2f]- 1
i-f,j
[f+1i2f,1 jf])= - Jij
~
J = -J
~
23
• 2.6 L’approche symplectique des transf. canoniques
J
ij= 1
i,j-f
[1if,f+1 j2f]- 1
i-f,j
[f+1i2f,1 jf](J J)
ij= Jik
J
jk=
(
i,k-f
[1if,f+1k2f]-
i-f,k
[f+1i2f,1kf]) .(
j,k-f
[1jf,f+1k2f]-
j-f,k
[f+1j2f,1kf])~
= (
i,k-f
j,k-f
[1if,f+1k2f]
[1jf,f+1k2f]+
i-f,k
j-f,k
[f+1i2f,1kf]
[f+1j2f,1kf]=
ij = 1ijJ J = 1
~
24
• 2.6 L’approche symplectique des transf. canoniques
c.q.f.d.
J J = 1,
~
J J = 1
~
J = -J = J
~
-1J
2= J J = -J J =-1
~
dtm(J) = +1
(2.49a) (2.49b) (2.49c) (2.49d)25
• 2.6 L’approche symplectique des transf. canoniques
(2.50)
(2.51) (2.52) (2.53)
(2.54) (2.55)
26
• 2.6 L’approche symplectique des transf. canoniques
(2.55)
(2.56)
(2.57a) (2.57b)
27
• 2.7 Les crochets de Poisson
[ ]
(2.58) (2.59) k k i i v et u Siu
v
~= u
iJ
ikv
k= u
i[
i,k-f
[1if,f+1k2f]-
i-f,k
[f+1i2f,1kf]]vk28
• 2.7 Les crochets de Poisson
(2.58) (2.60)
= u
i[
i,k-f
[1if,f+1k2f]-
i-f,k
[f+1i2f,1kf]]vkq
p
p
q
i i i i v u v u 29
• 2.7 Les crochets de Poisson
(2.61)
(2.62) (2.63)