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作者 peter308 在 PTT [ Physics ] 看板的留言(推文), 共611則
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5F推: 推喔08/08 11:08
8F推: 金融會用到的"特殊數學技巧" 能否分享一下??07/23 22:54
9F→: XDD07/23 22:54
19F推: 你是指幾何布朗運動嗎??07/24 10:18
25F推: 英文??07/26 14:25
26F→: 為啥很重要?07/26 14:25
8F推: 孫維新n年前是中央天文所的教授07/20 23:52
13F推: 顆顆 不是什麼都台大好啦 台灣就這麼小 台大教授07/21 12:42
14F→: 有可能把所有領域都包下來嗎??還是有些領域台大沒做的啊07/21 12:43
15F推: 像去年Roseta號的彗星觀測 台灣主要參與就中央的葉永烜07/21 12:50
16F→: 還有一個太空魔方的計畫 跟紅色精靈 中央都做得不錯07/21 12:56
17F→: 吳俊輝那個比較偏宇宙學的 跟天文太空我覺得還是有差07/21 12:57
27F推: 可以去中央找一位葉永煊教授 他應該是天文領域的大頭07/20 11:06
28F→: 印象他一年可以發好幾篇N/S的文章07/20 11:07
27F→: 說真的我看了很久 我還是不太懂原po想表達什麼...07/15 20:45
6F推: 我的確沒有把第一性原理 和計算常用"第一原理"註明清楚07/12 11:20
7F→: 原文已經修改 改謝指正!07/12 11:20
8F→: 其實我覺得第一原理最好是用來描述分子或是cluster07/12 11:21
9F→: 用ab initio來描述週期性或中大尺度系統 要特別當心07/12 11:23
10F→: 因為這種集體行為,自相似,突湧和複雜行為 我認為其背後07/12 11:23
11F→: 的物理機制並沒有被包納在ab initio中07/12 11:25
12F→: 我們的做法都是先定義一個cell size 然後用週期性邊條件07/12 11:26
13F→: 透過這個cell size 沿著晶格方向去擴大07/12 11:28
14F→: 這個作法在某些特殊系統 感覺是會出問題的!07/12 11:30
15F推: 自發對稱性破缺的這個性質 的確是像你講的 越來越重要了07/12 11:39
16F→: 以後不知道有沒辦法也整合到ab initio之中呢? 疑惑ing07/12 11:39
17F→: 我指整合到 ab initio的理論或是套裝軟體中07/12 11:40
36F推: 還是推pipi 你的文章我看了都蠻有收穫的!!07/16 11:37
37F推: PiPi 我還想到一件事 像第一原理通常都會假設Born-07/16 14:16
38F→: oppenheimer adibatic approximation, 可是像系統如果07/16 14:16
39F→: 出現強關聯 ex: 相變 或是超導 這個近似應該會不適用07/16 14:17
40F推: 所以變成要把BO 近似放回去 變成大部分的ab initio都會07/16 14:22
41F→: 失效07/16 14:23
42F→: 所以除了引入強關聯項 ex: +U DMFT外 , BO近似也要考慮07/16 14:24
31F推: XDDDDDDD07/07 10:22
4F→: 2F 影片有趣喔04/12 12:58
3F推: 其實你的物理老師這樣講有點誤導的嫌疑01/31 11:52
4F推: 古典物理極限下 根本不會有所謂的量子效應01/31 12:17
5F→: 所以把量子力學套在古典系統上 是非常奇怪的一件事01/31 12:17
1F推: effective mass=010/22 17:05
2F推: 因為dirac cone 所以等效質量=能帶對於動量二次微分=010/22 17:20
7F推: 感謝2F 提醒 我的確記錯了!10/22 17:40
8F→: Orz...10/22 17:40