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Invitation to Dinner - QSMS 2024 Summer School on Representation Theory
by 최동준 09 Jul '24

09 Jul '24

Dear Participants of QSMS 2024 Summer School on Representation Theory, Tomorrow is the final day of our Summer School. After the last lecture, we are planning to have a dinner gathering at a Korean BBQ restaurant near Nakseongdae Station. The details are as follows : Time : 5PMLocation : 시골집 (Si-Gol-Jip)Address : 서울특별시 관악구 낙성대로 22-7 (22-7, Nakseongdae-ro, Gwanak-gu, Seoul) (3km distance from the lecture room) Looking forward to seeing you there. Best regards, Dong-Jun Choi

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FW: Notes for my second seminar
by 최동준 02 Jul '24

02 Jul '24

안녕하세요, Léo 학생의 두 번째 강의 노트를 전달드립니다. 감사합니다. 최동준 올림 -----Original Message-----From: "Léo Buisine" <leo.buisine.leo(a)gmail.com>To: "최동준" <djchoi9696@snu.ac.kr>;Cc:Sent: 2024-07-02 (화) 01:50:06 (UTC+09:00)Subject: Notes for my second seminarDear 최동준, Here are finally my notes for the second part of the seminar I gave. Can you please send them to the team?  Hopefully, the notes for my seminar on supersymmetry should also be finished soon.  Best regards, Leo 

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Team Seminar Plans preparing Yangian school
by 최동준 01 Jul '24

01 Jul '24

안녕하세요, 6월 말부터 7월 초까지 짧게 있을 세미나를 소개드립니다. 7월 8일 ~ 7월 10일에는 Yangian의 표현을 배울 수 있는 QSMS Summer School이 있을 예정입니다. 자세한 정보는 아래 링크를 참조하세요 : https://sites.google.com/view/qsms2024ssrt https://sites.google.com/view/qsms2024ssrt Yangian의 대수 구조는 finite W-algebra, 그리고 quantum affine algebra와 깊은 관계를 가지고 있습니다. 따라서 QSMS Summer School 이전에 Yangian과 관련된 구조를 중심으로 finite W-algebra, quantum affine algebra를 공부하는 세미나를 진행하려 합니다. 세미나 정보는 다음과 같습니다 : 6월 24일 14:00 ~ 15:30 129동 309호, Finite W-algerba, 이강산6월 26일 14:00 ~ 15:30 129동 301호, Finite W-algerba., 윤상원7월 1일 14:00 ~ 15:30 129동 309호, Quantum affine algebra, 박민희7월 3일 14:00 ~ 15:30 129동 301호, Quantum affine algebra, 최동준세미나 주제에 관심이 있으신 분들께서는 자유롭게 참석 가능하시며, 궁금한 점이 있다면 제게 알려주시기 바랍니다. 감사합니다. 최동준 드림 I would like to introduce a short seminar series that will be held from late June to early July. From July 8 to July 10, the QSMS Summer School will take place, focusing on the representations of the Yangian. For more information, please visit : https://sites.google.com/view/qsms2024ssrt https://sites.google.com/view/qsms2024ssrt The algebraic structure of the Yangian is closely related to finite W-algebra and quantum affine algebra. Therefore, before the QSMS Summer School, we plan to hold seminars focusing on these related structures. The seminar details are as follows : June 24, 14:00 ~ 15:30, Room 309, Building 129, finite W-algebra, presented by 이강산June 26, 14:00 ~ 15:30, Room 301, Building 129, finite W-algebra, presented by 윤상원July 1, 14:00 ~ 15:30, Room 309, Building 129, quantum affine algebra, presented by 박민희July 3, 14:00 ~ 15:30, Room 301, Building 129, quantum affine algebra, presented by 최동준If you are interested in the seminar topics, please feel free to attend. If you have any questions, do not hesitate to contact me. Thank you. Best regards, Dong-Jun Choi

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Announcement on seminars next week
by 최동준 23 Jun '24

23 Jun '24

안녕하세요, 다음 주에 있을 세미나에 대한 안내를 드립니다. 두 가지 내용이 이전 메일에서 추가되었습니다. (1) 참고문헌을 알려달라는 요청이 있었습니다. 발표자분들께 참고문헌을 받아왔지만, 하나만의 참고문헌을 그대로 따라가는 방식의 세미나는 아닐 것 같으므로 참고만 해주시기 바랍니다. (2) 발표는 한국어로 진행됩니다. 발표 1 일시 : 6월 24일 월요일 14:00 - 15:30 장소 : 129동 309호 발표자 : 이강산 주제 : Finite W-algebra 참고문헌 : Shifted Yangians and finite W-algebras, Brundan-Kleshchev, 2006, Adv. in Math. 발표 2 일시 : 6월 26일 수요일 14:00 - 15:30 장소 : 129동 301호 발표자 : 윤상원 주제 : Finite W-algebra 참고문헌 : 1. Introduction to finite W-algebras, D.V.Artamonov 2. Finite vs affine W-algebra, De Sole, Kac 다음 주에 뵙겠습니다. 감사합니다. 최동준 올림 Dear all, I would like to inform you about the seminar that will take place next week. Two things have been added since the previous email. (1) There has been a request for references. Although I have collected references from the presenters, please note that the seminar will not follow a single reference. (2) The presentation will be given in Korean. Presentation 1 Date and Time : Monday, June 24th at 2:00PM to 3:30PM Venue : Building 129, Room 309 Presenter : 이강산 Topic : Finite W-algebra Reference :  Shifted Yangians and finite W-algebras, Brundan-Kleshchev, 2006, Adv. in Math. Presentation 2 Date and Time : Wednesday, June 26th at 2:00PM to 3:30PM Venue : Building 129, Room 301 Presenter : 윤상원 Topic : Finite W-algebra References : 1. Introduction to finite W-algebras, D.V.Artamonov 2. Finite vs affine W-algebra, De Sole, Kac I hope to see you next week. Best regard, Dong-Jun Choi

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FW: Abstract for team seminar
by 최동준 20 Jun '24

20 Jun '24

Dear all, I am forwarding you the email I received from Léo. The informations of today's seminar are as follows :  Time : 15:30 ~ 17:30 Location : Room 309, Building 129 Best regards, Dong-Jun Choi -----Original Message-----From: "Léo Buisine" <leo.buisine.leo(a)gmail.com>To: "최동준" <djchoi9696@snu.ac.kr>;Cc:Sent: 2024-06-20 (목) 00:53:46 (UTC+09:00)Subject: Abstract for team seminar tomorrowDear 최동준,  Here is a title and an abstract for my talk tomorrow.  주제 : A journey through symmetries 초록 : This talk should serve as a (re)introduction to symmetries in physics. After a discussion on the structure of spacetime and on the phenomenology of symmetries in physics, we will study the structure of the Lorentz group and of the Poincare group. We will also see the notion of spinor, which will be useful in what follows. Then, we will discuss of the Coleman-Mandula theorem, and how to bypass it by considering fermionic generators. This will naturally lead to the supersymmetry algebra. Finally, we will see how supersymmetry simplifies in the context of conformal invariance, leading to a nice superconformal algebra and to the structure of supersymmetric vertex algebras.  참고문헌 :  Lectures on Supersymmetry, Matteo Bertolini Notes on Superconformal Representations in Two Dimensions, Siyul Lee and Sungjay Lee I am sorry for sending this so late, I forgot to send you an email yesterday. Best regards, Leo

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Dinner Notice for This Thursday
by 최동준 18 Jun '24

18 Jun '24

안녕하세요, 이번 주 목요일 회식 시간과 장소를 알려드립니다. 날짜 : 2024년 6월 20일 목요일 시간 : 오후 6시 30분 장소 : 시골집 주소 : 서울 관악구 낙성대로 22-7 함께 즐거운 시간 보내길 기대합니다. 감사합니다. 최동준 올림 Dear all, I am pleased to inform you about our dinner this Thursday. Date : Thursday, June 20, 2024 Time : 6:30 PM Venue : 시골집 Address : 22-7 Nakseongdae-ro, Gwanak-gu, Seoul Looking forward to seeing you all there. Best regards, Dong-Jun Choi

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Supersymmetry Lecture on June 20
by 최동준 13 Jun '24

13 Jun '24

Dear all, I would like to inform you about the upcoming lecture on supersymmetry. Date : June 20 Location : Room 309, Building 129 Speaker : Léo Buisine Time : 15:30 ~ 17:30 Topic : Supersymmetry in Physics. Best regards, Dong-Jun Choi

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Summer Team Seminar Announcement
by 최동준 07 Jun '24

07 Jun '24

안녕하세요, 여름 팀세미나를 안내드립니다. 주제 : finite W-algebras and quantum affine algebras (related to summer school contents) 날짜 : 6월 20일 목요일 (미정) 6월 24일 월요일 14시 6월 26일 수요일 14시 7월 1일 월요일 14시 7월 3일 수요일 14시 목표 : 1. Summer school에서 배울 Yangian과 깊은 연관이 있는 finite W-algebra에 대하여 이해한다. 2. 또한 Yangian의 representation과 parallel한 현상이 quantum affine algebra에서 나타나는 것을 관찰한다. 시간, 장소, 주제, 진행방식, 참고문헌에 대한 모든 의견을 환영합니다. 또한, 발표를 원하는 분은 제게 알려주시기 바랍니다. 지원자가 없는 경우 표현론팀에 발표를 요청하겠습니다. 감사합니다. 최동준 드림. Dear all, I would like to inform you about the upcoming summer team seminar. Topic : Finite W-algebras and quantum affine algebras (related to summer school contents) Dates : Thursday, June 20 (Not decided) Monday, June 24 at 14:00 Wednesday, June 26 at 14:00 Monday, July 1 at 14:00 Wednesday, July 3 at 14:00 Goals : 1. To understand finite W-algebras, which is closely related to the main object, Yangian, of this summer school. 2. To observe the parallel phenomena of representations of Yangian which also appear in quantum affine algebras. We welcome all opinions regarding the time, place, topic, references, and manner of seminar. If you would like to present, please let me know. If there are no volunteers, we will request a presentation  from the representation theory team. Thank you. Best regards, Dong-Jun Chou.

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Team Seminar Announcement (5.28)
by 최동준 28 May '24

28 May '24

안녕하세요, 오늘 있을 발표를 안내 드립니다. 발표자 : Léo Buisine 주제 : Physics for W-algebraists : Part 2 초록 : In this talk, I will try to motivate and derive quantum W-algebras. Following the historical study of RCFTs, we will first motivate the search for RCFTs, and give a general physicist's definition for W-algebras. We will then look at the WZW-model which generates affine Kac-Moody algebras, and how to reduce it to get the quantum W-algebras known to mathematicians. In doing so, we will go through Toda field theories and Casimir algebras.  일시 : 5월 28일 오후 3시 30분 장소 : 129동 309호 참고문헌 :  Wess-Zumino-Witten Models, Lorenz Eberhardt W-symmetry in Conformal Field Theory, Peter Bouwknegt and Kareljan Schoutens 많은 참석 부탁드립니다. 감사합니다. 최동준 드림 Dear all, I would like to inform you of the seminar today. Speaker : Léo Buisine Topic : Physics for W-algebraists : Part 2 Abstract : In this talk, I will try to motivate and derive quantum W-algebras. Following the historical study of RCFTs, we will first motivate the search for RCFTs, and give a general physicist's definition for W-algebras. We will then look at the WZW-model which generates affine Kac-Moody algebras, and how to reduce it to get the quantum W-algebras known to mathematicians. In doing so, we will go through Toda field theories and Casimir algebras.  Date : May 28th, 3:30 PM Venue : 129동 309호 References :  Wess-Zumino-Witten Models, Lorenz Eberhardt W-symmetry in Conformal Field Theory, Peter Bouwknegt and Kareljan Schoutens Best regards, Dong-Jun Choi

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Team Seminar Announcement (5.28)
by 최동준 24 May '24

24 May '24

안녕하세요, 다음 주에 있을 발표를 안내 드립니다. 발표자 : Léo Buisine 주제 : Physics for W-algebraists : Part 2 초록 : In this talk, I will try to motivate and derive quantum W-algebras. Following the historical study of RCFTs, we will first motivate the search for RCFTs, and give a general physicist's definition for W-algebras. We will then look at the WZW-model which generates affine Kac-Moody algebras, and how to reduce it to get the quantum W-algebras known to mathematicians. In doing so, we will go through Toda field theories and Casimir algebras.  일시 : 5월 28일 오후 3시 30분 장소 : 129동 309호 참고문헌 :  Wess-Zumino-Witten Models, Lorenz Eberhardt W-symmetry in Conformal Field Theory, Peter Bouwknegt and Kareljan Schoutens 많은 참석 부탁드립니다. 감사합니다. 최동준 드림 Dear all, I would like to inform you of the seminar next week. Speaker : Léo Buisine Topic : Physics for W-algebraists : Part 2 Abstract : In this talk, I will try to motivate and derive quantum W-algebras. Following the historical study of RCFTs, we will first motivate the search for RCFTs, and give a general physicist's definition for W-algebras. We will then look at the WZW-model which generates affine Kac-Moody algebras, and how to reduce it to get the quantum W-algebras known to mathematicians. In doing so, we will go through Toda field theories and Casimir algebras.  Date : May 28th, 3:30 PM Venue : 129동 309호 References :  Wess-Zumino-Witten Models, Lorenz Eberhardt W-symmetry in Conformal Field Theory, Peter Bouwknegt and Kareljan Schoutens Best regards, Dong-Jun Choi

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