[閒聊] 最小作用量原理的由來
之前古典力學老師問我們:
為什麼系統的演化會遵循S的variation=0的路徑?
我有想過各種怪答案,亂度、對稱性之類的.....但都不是很滿意
直到後來量子力學老師在講Hamilton-Jacobi Eq的時候,
他說以物質波來看,當h->0時,不同的演化路徑會因相位差互相抵銷,
只剩下δS=0的那條,也就是Classical Path,這才解除我的困惑。
不知道除了物質波的觀點之外,還有什麼可以解釋Least Action Principle呢?
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.113.242.120
推
10/31 09:42, , 1F
10/31 09:42, 1F
→
10/31 09:47, , 2F
10/31 09:47, 2F
推
10/31 09:47, , 3F
10/31 09:47, 3F
推
10/31 09:56, , 4F
10/31 09:56, 4F
→
10/31 09:56, , 5F
10/31 09:56, 5F
推
10/31 10:05, , 6F
10/31 10:05, 6F
→
10/31 10:06, , 7F
10/31 10:06, 7F
推
10/31 10:12, , 8F
10/31 10:12, 8F
→
10/31 10:17, , 9F
10/31 10:17, 9F
→
10/31 10:27, , 10F
10/31 10:27, 10F
推
10/31 10:47, , 11F
10/31 10:47, 11F
推
10/31 10:54, , 12F
10/31 10:54, 12F
→
10/31 10:57, , 13F
10/31 10:57, 13F
→
10/31 10:58, , 14F
10/31 10:58, 14F
推
10/31 11:47, , 15F
10/31 11:47, 15F
推
10/31 12:15, , 16F
10/31 12:15, 16F
→
10/31 12:17, , 17F
10/31 12:17, 17F
→
10/31 12:17, , 18F
10/31 12:17, 18F
推
10/31 12:22, , 19F
10/31 12:22, 19F
推
10/31 12:54, , 20F
10/31 12:54, 20F
→
10/31 12:55, , 21F
10/31 12:55, 21F
推
10/31 12:57, , 22F
10/31 12:57, 22F
→
10/31 12:57, , 23F
10/31 12:57, 23F
推
10/31 18:27, , 24F
10/31 18:27, 24F
→
10/31 18:30, , 25F
10/31 18:30, 25F
→
10/31 18:34, , 26F
10/31 18:34, 26F
推
10/31 18:36, , 27F
10/31 18:36, 27F
→
10/31 18:36, , 28F
10/31 18:36, 28F
→
10/31 18:37, , 29F
10/31 18:37, 29F
推
10/31 18:39, , 30F
10/31 18:39, 30F
推
10/31 18:49, , 31F
10/31 18:49, 31F
推
10/31 19:10, , 32F
10/31 19:10, 32F
→
10/31 20:29, , 33F
10/31 20:29, 33F
→
08/13 15:52, , 34F
08/13 15:52, 34F
→
09/17 13:53, , 35F
09/17 13:53, 35F
→
11/09 11:54, , 36F
11/09 11:54, 36F
→
01/02 14:34,
5年前
, 37F
01/02 14:34, 37F
→
07/06 22:33,
5年前
, 38F
07/06 22:33, 38F
討論串 (同標題文章)