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kicheonkang
เข้าร่วมเมื่อ 21 พ.ค. 2011
Theoretical physicist working on quantum foundation and mesoscopic physics
วีดีโอ
![[QM2] 24. Entangled states](http://i.ytimg.com/vi/jer0R9N902E/mqdefault.jpg)
![[QM2] 24. Entangled states](/img/tr.png)
![[QM2] 22A. Quantitative analysis of the Bohr’s recoiling slit](http://i.ytimg.com/vi/_7Ds5OSMJdY/mqdefault.jpg)
[QM2] 22A. Quantitative analysis of the Bohr’s recoiling slit
มุมมอง 9114 วันที่ผ่านมา
[QM2] 22A. Quantitative analysis of the Bohr’s recoiling slit
![[QM2] 23. Energy-time uncertainty and Einstein-Bohr debates II](http://i.ytimg.com/vi/7zasmF816LA/mqdefault.jpg)
[QM2] 23. Energy-time uncertainty and Einstein-Bohr debates II
มุมมอง 9614 วันที่ผ่านมา
[QM2] 23. Energy-time uncertainty and Einstein-Bohr debates II
![[QM2] 22. Complementarity and two-path interference](http://i.ytimg.com/vi/lQJ76c9CFvM/mqdefault.jpg)
[QM2] 22. Complementarity and two-path interference
มุมมอง 14821 วันที่ผ่านมา
[QM2] 22. Complementarity and two-path interference
![[QM2] 21. Discrete symmetries](http://i.ytimg.com/vi/iFiwqtZ9hr8/mqdefault.jpg)
![[QM2] 20. Transformation of a state and symmetry](http://i.ytimg.com/vi/M23cRbykrbU/mqdefault.jpg)
[QM2] 20. Transformation of a state and symmetry
มุมมอง 13728 วันที่ผ่านมา
[QM2] 20. Transformation of a state and symmetry
![[QM2] 19. Symmetries and conservation laws: Intro.](http://i.ytimg.com/vi/Djr8rjZgbpg/mqdefault.jpg)
[QM2] 19. Symmetries and conservation laws: Intro.
มุมมอง 153หลายเดือนก่อน
[QM2] 19. Symmetries and conservation laws: Intro.
![[QM2] 18. Free electron gas](/img/n.gif)
[QM2] 17. Maxwell-Boltzmann statistics / Planck distribution
มุมมอง 161หลายเดือนก่อน
[QM2] 17. Maxwell-Boltzmann statistics / Planck distribution
[QM2] 16. Statistics of many bosons/fermions
มุมมอง 139หลายเดือนก่อน
[QM2] 16. Statistics of many bosons/fermions
[QM2] 14. Exchange scattering experiment
มุมมอง 115หลายเดือนก่อน
[QM2] 14. Exchange scattering experiment
[QM2] 13. Exchange force of the identical particles
มุมมอง 109หลายเดือนก่อน
[QM2] 13. Exchange force of the identical particles
[QM2] 12. Exchange symmetry of the identical particles
มุมมอง 122หลายเดือนก่อน
[QM2] 12. Exchange symmetry of the identical particles
[QM2] 10. Effect of higher Z and finite mass of the nucleus
มุมมอง 1152 หลายเดือนก่อน
[QM2] 10. Effect of higher Z and finite mass of the nucleus
[QM2] 9. Energy eigenvalues of the hydrogen atom
มุมมอง 1152 หลายเดือนก่อน
[QM2] 9. Energy eigenvalues of the hydrogen atom
[QM2] 8. Radial equation of the hydrogenlike atom
มุมมอง 1372 หลายเดือนก่อน
[QM2] 8. Radial equation of the hydrogenlike atom
[QM2] 6. Constructing the eigenfunctions of the angular momentum
มุมมอง 1712 หลายเดือนก่อน
[QM2] 6. Constructing the eigenfunctions of the angular momentum
[QM2] 5. Angular momentum operators in the spherical polar coordinates
มุมมอง 1363 หลายเดือนก่อน
[QM2] 5. Angular momentum operators in the spherical polar coordinates
[QM2] 4. Angular momentum and the generator of rotation
มุมมอง 1473 หลายเดือนก่อน
[QM2] 4. Angular momentum and the generator of rotation
[QM2] 2. Commutation relations for the 3-dimensional rotations
มุมมอง 1993 หลายเดือนก่อน
[QM2] 2. Commutation relations for the 3-dimensional rotations
[QM2] 1. Rotations of a classical vector
มุมมอง 2063 หลายเดือนก่อน
[QM2] 1. Rotations of a classical vector
[QM1] 26. Generalized uncertainty principle
มุมมอง 1536 หลายเดือนก่อน
[QM1] 26. Generalized uncertainty principle
[QM1] 25. Properties of the eigenstes of a Hermitian operator
มุมมอง 1176 หลายเดือนก่อน
[QM1] 25. Properties of the eigenstes of a Hermitian operator
[QM1] 24. Eigenvectors and eigenvalues, observables
มุมมอง 1166 หลายเดือนก่อน
[QM1] 24. Eigenvectors and eigenvalues, observables
항상 좋은 강의 올려주셔서 감사합니다.
감사합니다
오늘도 잘배웠습니다
어짜피 boas에 있으니까 1학년때 수리물리를 배우는군요 커리큘럼이 좋네요
졸업한지가 옛날이라 많이잊어버렸는데 처음부터해주셔서 너무좋아요
졸업 후에도 다시 공부할수 있어서 다시금 교수님 수업듣는거같아서 늘 좋아요.
늘 올려주셔서 감사합니다
18:43
🍊
You spin me round
🦧
Welcome to the 3rd dimension.
명강입니다. Unitarity와 상태함수가 복소함수라는 것이 불가분의 관계라는 것을 짚어주셨어요. 깨달음 주셔서 감사합니다~
알아봐 주셔서 감사합니다 ㅎ
😶🌫️
QM1 재생 목록에 본 영상이 없습니다
ξ
ξ
My quantum mechanics skills are unitary.
😮
Ψ😈Ψ
😛
|Ψ>
|Ψ>
|Ψ>
😂😮
늘 올려주셔서 감사합니다. 졸업 하고 종종 볼때 너무 그리운 수업이에요.
강의 올려주셔서 감사합니다
꾸준히 올려주셔서 감사합니다. 졸업하고도 가끔 강의 생각나서 보고있습니다.
좋은 강의 정말 감사합니다 교수님
🐶🐱
🤓
간결하면서 함의가 많네요. 공개해주셔서 감사😊
👾
🌚
멋진강의 감사합니다
🪳
🦝
멎진강의 감사합니다.
🦥
🧚🏻♀️
사용하시는 교재를 여쭤봐도 될까요?
주로 Mary Boas 의 수리물리학 을 따라갔습니다.
🦫
👏
언제나 강의 올려주셔서 감사합니다
Keep making a great video, I enjoy watching. You could get more fans with Promo sm!
😝
교수님 시스템의 라그랑지안을 대칭성 조건을 이용해서 찾을 수 있다는 것을 알겠습니다. 그런데 만일 시스템에 공간적인 대칭성을 전혀 찾을 수 없더라도 그 시스템의 라그랑지안은 여전히 T-V 로 찾을 수(정의될 수) 있는 것인지요? 다시 말해 대칭성으로 라그랑지안을 찾는 것은 가능하지만, 라그랑지안을 정의하는 데에 반드시 어떤 대칭성이 필요하다는 것은 틀린 말인지 궁금합니다.
L = T - V 라고 쓰려면 이미 특정한 symmetry 를 염두에 두어야 합니다. Galilean invariance.
48:56 펭하 ㅋㅋㅋ
ㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋ
@@sw980709 😂
☺️ 𝖕𝖗𝖔𝖒𝖔𝖘𝖒
감사합니다 🙏 리만텐서의 미지수 갯수가 20개가 되는 이유가 궁금합니다. 256개 중에서 대칭과 비앙키항등식 등으로 줄어든다고 하는데 ...
세어 보면 나옵니다 ^^ 물론 잘 세는 방법이 있지요. 일종의 조합인데.. 말로 설명은 어렵고 상대론 textbook 참조. 가령 Sean Carroll 의 3.7절.
@@kicheonkang 찾다보니 나름 잘 정리된 것이 있어서 링크 올려봅니다 th-cam.com/video/l1pXaH3xhzs/w-d-xo.html
48:26 -mc^2 가 우측에 나오는 이유가 무엇 때문인지요 ? 위에 보면 라그랑지안 L = 운동에너지(1/2 mv^2) - 포텐셜에너지(mV)였는데요 !
상대론적 접근에서는 -mc^2 이 나오는 것이 맞습니다. 상수이니까 운동방정식에 영향을 안 주니 그냥 생략하기도 할 뿐.
감사합니다 🙏
감사합니다 🙏