The 2nd Nuclear Physics Tortoise Lecture Series (NPTLS)

Name: The 2nd Nuclear Physics Tortoise Lecture Series (NPTLS)
Start: 2026-01-11T00:00:00+09:00
End: 2026-01-16T23:59:00+09:00
Location: No location set

11 Jan 2026, 00:00 → 16 Jan 2026, 23:59 Asia/Seoul

Description

Nuclear Physics Tortoise Lecture Series 2026

- Seeing the forest of nuclear density functionals, then building a spherical code.

- Now in its second year (launched in 2025), the Nuclear Physics Tortoise Lectures follows a simple motto:

go slowly, get it right!

This year’s theme offers a big-picture tour of nuclear energy density functional theory (DFT/EDF) as a unifying framework for finite nuclei and nuclear matter. Invited lecturers Kenichi Yoshida and Haozhao Liang will map the conceptual landscape—Kohn–Sham reduction of the many-body problem; the roles of normal and anomalous (pairing) densities; spontaneous symmetry breaking and, where appropriate, symmetry restoration; and a comparative view of Skyrme, Gogny, and covariant (relativistic) EDF families, including current practice in calibration and uncertainty assessment. Connections to observables (masses, radii, separation energies), bulk matter, and linear response (RPA/QRPA) keep the physics front and center.

In the hands-on component, participants will build a minimal, self-consistent spherical HF/HFB solver from scratch. Step by step, we set up the radial mesh and boundary conditions, assemble mean fields (including spin–orbit and Coulomb as needed), implement BCS/HFB pairing, and stabilize convergence with practical mixing strategies—culminating in calculations of binding energies, charge radii, and one-neutron separation energies. By the end of the school, attendees leave with (i) a working spherical code they understand line by line and (ii) a clear conceptual map of EDF physics that ties formal ideas to robust, reproducible computation—the Tortoise School way: deliberate, precise, and durable.

Venue

Science Building Room #326 (과학관 326호) ,50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea

view the location

Period

January 11 (Sun.), 2026 ~ January 16 (Fri.), 2026

Organizer

Myung-Ki Cheoun ( Soongsil Univ., Korea)

Youngman Kim (IBS, Korea)

Chang-Hwan Lee (Pusan Nat'l Univ., Korea)

Yeunhwan Lim ( Yonsei Univ., Korea)

Seung-il Nam ( Pukyoung Nat'l Univ., Korea)

Invited Lecturers

Kenichi Yoshida (RCNP, Osaka Univ.)

Hiroyuki Tajima (Tokyo University)

Contact Info.

010-4484-3477 (Gihwan Nam, 남기환)

Registration

2nd NPTLS

Participants

Chaeyun Lee
Chang-hoon Song
Dae Ik Kim
Eun Ja HA
Eunkang Kim
gihwan Nam
Gyeongbin Park
Hanil Bae
Heesung Kwon
Hiroyuki Tajima
Jeonghyeok Park
Jihu Song
JinMyeong Kim
Jubin Park
juntae koh
Kenichi Yoshida
Kyoungsu Heo
Kyungil Kim
Latsamy Xayavong
Lee Jungwoo
Myeong-Hwan Mun
Myung-Ki CHEOUN
Myunghee Park
Prashant Thakur
Sangho Kim
Sejun Park
Seon Ho Nam
Seong Yeon Kim
Seung-il Nam
Shung-Ichi Ando
Tsuyoshi Miyatsu
Valentin Allard
Yeunhwan Lim
Young_So Choi
Youngman Kim
Yusuke Tanimura

Sunday, 11 January
- Registration
  
  Convener: gihwan Nam (Yonsei Univ.)
- Orientation
  
  Convener: gihwan Nam (Yonsei Univ.)
Monday, 12 January
- Chapter 1: Introduction to the Physics of Exotic Nuclei ---Theoretical Challenges
  
  An overview of exotic nuclei far from stability, focusing on their
  unique structural features and the theoretical difficulties in
  describing weak binding, deformation, and continuum effects.
  
  Convener: Prof. Kenichi Yoshida (RCNP, Osaka Univ.)
  
  NPTLS(2026)_Yoshida1 .pdf
- 10:30
  
  Break
- Chapter 2: Self-Consistent Mean-Field Theory
  
  Introduction to self-consistent mean-field approaches, including
  Hartree–Fock and Hartree–Fock–Bogoliubov theories, as the foundation
  for modern nuclear structure calculations.
  
  Convener: Prof. Kenichi Yoshida (RCNP, Osaka Univ.)
- 12:00
  
  Lunch
- Chapter 3: Symmetry Breaking in Mean-Field Theory
  
  Discussion of spontaneous symmetry breaking in nuclear mean-field
  models and its physical significance for deformation and pairing
  correlations.
  
  Convener: Prof. Kenichi Yoshida (RCNP, Osaka Univ.)
- 15:00
  
  Break
- Exercise 1: Mean-Field Calculations
  
  Hands-on exercise introducing practical aspects of mean-field calculations.
  
  Convener: Prof. Kenichi Yoshida (RCNP, Osaka Univ.)
Tuesday, 13 January
- Chapter 4: Basics of the Nuclear Energy-Density Functional (EDF) Method
  
  Fundamental concepts of the nuclear EDF framework, including the
  construction of functionals and their role in describing ground-state
  properties across the nuclear chart.
  
  Convener: Prof. Kenichi Yoshida (RCNP, Osaka Univ.)
  
  NPTLS(2026)_Yoshida2 .pdf
- 10:30
  
  Break
- Chapters 5 & 6: Time-Dependent Nuclear EDF and Collective Motion
  
  Introduction to the time-dependent EDF approach and its application to
  nuclear dynamics.
  
  Convener: Prof. Kenichi Yoshida (RCNP, Osaka Univ.)
- 12:00
  
  Lunch
- Chapters 5 & 6: Time-Dependent Nuclear EDF and Collective Motion
  
  Introduction to the time-dependent EDF approach and its application to
  nuclear dynamics.
  
  Convener: Prof. Kenichi Yoshida (RCNP, Osaka Univ.)
- 15:00
  
  Break
- Exercise 2: Nuclear EDF Calculations
  
  Hands-on exercise focused on EDF-based calculations: the Kohn–Sham
  method for spherical nuclei.
  
  Convener: Prof. Kenichi Yoshida (RCNP, Osaka Univ.)
Wednesday, 14 January
- Chapters 7 & 8: Nuclear EDF Applications to Exotic Nuclei
  
  Advanced applications of the nuclear EDF method to exotic nuclei,
  including weakly bound systems and collective excitations near the
  drip lines.
  
  Convener: Prof. Kenichi Yoshida
  
  Yoshida3_Yonsei.pdf
- 10:30
  
  Break
- Chapters 7 & 8: Nuclear EDF Applications to Exotic Nuclei
  
  Advanced applications of the nuclear EDF method to exotic nuclei,
  including weakly bound systems and collective excitations near the
  drip lines.
  
  Convener: Prof. Kenichi Yoshida
- Banquet (서울 서대문구 명물1길 2: 형제갈비 4층(불고기))
Thursday, 15 January
- 1. Introduction to ultracold atoms as a quantum simulator of nuclear systems
  
  Convener: Prof. Hiroyuki Tajima
  
  winter-school_1_Tajima.pdf
- 10:30
  
  Break
- 2. Ultracold Fermi gas and renormalization
  
  Convener: Prof. Hiroyuki Tajima
  
  winter-school_2_Tajima.pdf
- 12:00
  
  Lunch
- 3. BCS-Eagles-Leggett theory for the BCS-BEC crossover
  
  Convener: Prof. Hiroyuki Tajima
  
  winter-school_3_Tajima.pdf
- 15:00
  
  Break
- 4. Exercise 1: Hands-on exercise of mean-field description
  
  Convener: Prof. Hiroyuki Tajima
  
  winter-school_4_Tajima.pdf
Friday, 16 January
- 5. Pairing fluctuations beyond mean-field theory
  
  Convener: Prof. Hiroyuki Tajima
  
  winter-school_5_Tajima.pdf
- 10:30
  
  Break
- 6. Exotic superfluid and nucleon superfluidity
  
  Convener: Prof. Hiroyuki Tajima
  
  winter-school_6_tajima.pdf
- 12:00
  
  Lunch
- 7. Exercise 2: Minimal framework for critical-temperature curve
  
  Convener: Prof. Hiroyuki Tajima
  
  winter-school_7_tajima.pdf
- 15:00
  
  Break
- 8. Hadron-quark crossover from an ultracold-atom perspective
  
  Convener: Prof. Hiroyuki Tajima
  
  winter-school_8_tajima.pdf