8th International School on High-Energy and Astro-Physics (SHEAP 2026): Modified Gravity

13 Aug 2026, 07:45 → 20 Aug 2026, 16:30 Asia/Bangkok

Auditorium (Center for Information Technology and Communication Services (CITCOMS), Naresuan University)

SHEAP 2026: International School on High-Energy and Astro-Physics

Theme: Modified Gravity and Theoretical Foundations

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Announcement Participants

: https://indico.global/event/17514/page/6010-participants

Event Details

• Date: August 13 – 20, 2026
  Application Deadline: June 30, 2026

• Venue1:
  Auditorium - Center for Information Technology and Communication Services (CITCOMS), Naresuan University 

• Venue2: 
  The Institute for Fundamental Study (IF), Naresuan University, Phitsanulok, Thailand.

Overview

The SHEAP 2026 is an intensive academic program hosted by the Institute for Fundamental Study (IF), Naresuan University. The school aims to provide a comprehensive bridge for advanced undergraduate and graduate students into the frontiers of High-Energy Physics and Astrophysics, focusing on the mathematical structures and physical implications of modified gravity.

Registration Information

The school welcomes undergraduate seniors and graduate students (Master's and Ph.D.) with a strong interest in theoretical physics.

• Aspect Capacity: 30 participants - (The list of selected participants will be announced later for confirmation.)
  Registration Fee: Free! (No cost to join the activity.)
• Travel Expenses: Participants are responsible for their own travel costs. We have some travel support for foreign students in ASEAN. This support is limited to 4-5 students, depending on our budget. 

• Accommodation: We support free on-campus accommodation at Naresuan dormitory for all students.  https://maps.app.goo.gl/SqeMhnvrxy5SNofv6.  This is available upon request. 
  (If you want to stay at a different place, you will be responsible for booking and covering the lodging costs yourself.)

  • Stay period: From the night of August 12 – 19, 2026.

  • Room Format: Shared rooms with other participants (2 people per room, separated by gender).

• Please provide your information for registration in the following link https://forms.gle/oTNTQm4saHDwFQqH6

Objectives

• Foundation Building: To provide rigorous training in General Relativity, Field Theory, and Constraint Analysis.

• Advanced Expertise: To introduce students to modern theories of gravity (Horndeski, DHOST, MMG) and Effective Field Theory (EFT).

• International Collaboration: To facilitate knowledge exchange between Thai students and world-class experts from international institutions.

Scientific Scope & Key Topics

• Fundamental Reviews: Review of GR, Field Theory, Cosmology, and Constraint Analysis.

• Mathematical Foundations: Stability and Causality in gravity, and the Cauchy problem in modified gravity theories.

• Modern Gravity Theories: Scalar-Tensor theory, Horndeski theory, GLPV theories, DHOST, U-DHOST, and Minimal Modified Gravity (MMG).

• Effective Field Theory (EFT): Goldstone Bosons, EFT of Inflation, Dark Energy, and its applications in modern physics.

Key Speakers & Instructors

• Eugeny Babichev (IJCLab, Université Paris-Saclay, France)

• Antonio de Felice (Yukawa Institute for Theoretical Physics, Kyoto University, Japan)

• David F. Mota (UNIVERSITY OF OSLO, Norway)

• Vicharit Yingcharoenrat (Department of Physics, Chulalongkorn University)

• Nontapat Wanwieng  (NARIT, National Astronomical Research Institute of Thailand)

• Pitayuth Wongjun (IF, Naresuan University)

• Khamphee Karwan (IF, Naresuan University)

• Pichet Vanichchapongjaroen (IF, Naresuan University)

• Pongwit Srisangyingcharoen (IF, Naresuan University)

Program Highlights

• Intensive Lectures: Deep dives into theoretical frameworks by leading global experts.

• Hands-on Tutorials: Evening sessions to solve problems and reinforce lecture concepts (Led by: Supakchai Ponglertsakul, Ratchaphat Nakarachinda, Pitayuth Wongjun).

• Student Research: Dedicated "Students Talk" sessions for participants to present their work.

• Academic Excursion: A half-day trip to explore the historical and cultural landmarks of Phitsanulok.

Local organizers

• Pitayuth Wongjun (IF, Naresuan University)

• Khamphee Karwan (IF, Naresuan University)

• Petarpa Boonserm (Faculty of Science, Chulalongkorn University)

Organized and Co-hosted by

• NARIT - National Astronomical Research Institute of Thailand

• Thai-CERN
• PMU - Program Management Unit for Frontier Brainpower and Future Industries
• IF NU - The Institute for Fundamental Study, Naresuan University

Thursday 13 August

08:30 → 09:30 Registration

Speaker: (IF)

09:30 → 09:45 Open

Speaker: Sikarin Yoo-Kong (IF)

09:45 → 10:45 Review of GR

Speaker: Mr Nontapat Wanwieng

10:45 → 11:00 Break

Speaker: (IF)

11:00 → 12:00 Review of Field Theory

Speaker: Pongwit Srisangyingcharoen (IF)

12:00 → 13:00 Lunch

Speaker: (IF)

13:00 → 14:00 Review of constraint analysis

Speaker: Pichet Vanichchapongjaroen (The Institute for Fundamental Study “The Tah Poe Academia Institute”, Naresuan University)

14:00 → 14:15 Break

Speaker: (IF)

14:15 → 15:15 Review of cosmology

Speaker: Pitayuth Wongjun

15:15 → 15:30 Break

Speaker: (IF)

15:30 → 16:30 Introduction to modified gravity theories

Speaker: Dr Khamphee Karwan (The Institute for Fundamental Study)

16:30 → 18:30 Dinner

Speaker: (IF)

18:30 → 20:30 Tutorial

Friday 14 August

09:45 → 10:45 Stability

Speaker: Eugeny BABICHEV

10:45 → 11:00 Break

Speaker: (IF)

11:00 → 12:00 Causality

Speaker: Eugeny BABICHEV

12:00 → 13:00 Lunch

Speaker: (IF)

13:00 → 14:00 Cauchy problem in gravity theories

Speaker: Eugeny BABICHEV

14:00 → 14:15 Break

Speaker: (IF)

14:15 → 15:15 Cauchy problem in gravity theories

Speaker: Eugeny BABICHEV

15:15 → 15:30 Break

Speaker: (IF)

15:30 → 16:30 Cauchy problem in gravity theories

Speaker: Eugeny BABICHEV

16:30 → 18:30 Dinner

Speaker: (IF)

18:30 → 20:30 Tutorial

Saturday 15 August

09:45 → 10:45 Scalar tensor theory

Speaker: Eugeny BABICHEV

10:45 → 11:00 Break

Speaker: (IF)

11:00 → 12:00 Horndeski theory1

Speaker: Eugeny BABICHEV

12:00 → 13:00 Lunch

Speaker: (IF)

13:00 → 14:00 Horndeski theory2

Speaker: Eugeny BABICHEV

14:00 → 14:15 Break

Speaker: (IF)

14:15 → 15:15 GLPV theories1

Speaker: Eugeny BABICHEV

15:15 → 15:30 Break

Speaker: (IF)

15:30 → 16:30 GLPV theories2

Speaker: Eugeny BABICHEV

16:30 → 18:30 Dinner

Speaker: (IF)

18:30 → 20:30 Tutorial

Speaker: North, Ratch, A, Ngung (IF)

Sunday 16 August

09:45 → 10:45 Introduction to Effective Field Theory1

Speakers: Vicharit Yingcharoenrat, Vicharit Yingcharoenrat (SISSA)

10:45 → 11:00 Break

Speaker: (IF)

11:00 → 12:00 Introduction to Effective Field Theory2

Speakers: Vicharit Yingcharoenrat, Vicharit Yingcharoenrat (SISSA)

12:00 → 13:00 Lunch

Speaker: (IF)

13:00 → 14:00 Review of Goldstone Bosons in Effective Field Theory

Speakers: Vicharit Yingcharoenrat, Vicharit Yingcharoenrat (SISSA)

14:00 → 14:15 Break

Speaker: (IF)

14:15 → 15:15 Effective Field Theory of Inflation/Dark Energy

Speakers: Vicharit Yingcharoenrat, Vicharit Yingcharoenrat (SISSA)

15:15 → 15:30 Break

Speaker: (IF)

15:30 → 16:30 Applications of Effective Field Theory and Outlook

Speakers: Vicharit Yingcharoenrat, Vicharit Yingcharoenrat (SISSA)

16:30 → 18:30 Dinner

Speaker: (IF)

18:30 → 20:30 Tutorial

Monday 17 August

09:45 → 10:45 Students talk1

Speaker: (IF)

10:45 → 11:00 Break

Speaker: (IF)

11:00 → 12:00 Talk1, Talk2

Speaker: (IF)

12:00 → 13:00 Lunch

Speaker: (IF)

13:00 → 14:00 Excursion

Speaker: (IF)

14:00 → 14:15 Excursion

Speaker: (IF)

14:15 → 15:15 Excursion

Speaker: (IF)

15:15 → 15:30 Excursion

Speaker: (IF)

15:30 → 16:30 Excursion

Speaker: (IF)

16:30 → 18:30 Dinner

Speaker: (IF)

18:30 → 20:30 Dinner

Speaker: (IF)

Tuesday 18 August

09:45 → 10:45 DHOST and U-DHOST theories

Speaker: Prof. Antonio De Felice (Yukawa Institute for Theoretical Physics, Kyoto University)

10:45 → 11:00 Break

Speaker: (IF)

11:00 → 12:00 Applications of the DHOST theories to the real world

Speaker: Prof. Antonio De Felice (Yukawa Institute for Theoretical Physics, Kyoto University)

12:00 → 13:00 Lunch

Speaker: (IF)

13:00 → 14:00 MMG theory

Speaker: Prof. Antonio De Felice (Yukawa Institute for Theoretical Physics, Kyoto University)

14:00 → 14:15 Break

Speaker: (IF)

14:15 → 15:15 Applications of the MMG theory to the real world

Speaker: Prof. Antonio De Felice (Yukawa Institute for Theoretical Physics, Kyoto University)

15:15 → 16:15 Students talk2

Speaker: (IF)

16:15 → 17:15 Students talk3

Speaker: (IF)

17:15 → 18:30 Dinner

Speaker: (IF)

18:30 → 20:30 Tutorial

Wednesday 19 August

09:45 → 10:45 Cosmological probes of dark energy and modified gravity I

Speaker: David F. Mota

10:45 → 11:00 Break

Speaker: (IF)

11:00 → 12:00 Cosmological probes of dark energy and modified gravity II

Speaker: David F. Mota

12:00 → 13:00 Lunch

Speaker: (IF)

13:00 → 14:00 Cosmological probes of dark energy and modified gravity III

Speaker: David F. Mota

14:00 → 14:15 Break

Speaker: (IF)

14:15 → 15:15 Cosmological probes of dark energy and modified gravity IV

Speaker: David F. Mota

15:15 → 15:30 Break

Speaker: (IF)

15:30 → 16:30 Cosmological probes of dark energy and modified gravity V

Speaker: David F. Mota

16:30 → 18:30 Dinner

Speaker: (IF)

18:30 → 20:30 Tutorial

Thursday 20 August

09:45 → 10:45 Talk3, Talk4

Speaker: (IF)

10:45 → 11:00 Break

Speaker: (IF)

11:00 → 12:00 Talk5, Talk6

Speaker: (IF)

12:00 → 13:00 Lunch

Speaker: (IF)

13:00 → 14:00 Talk7, Talk8

Speaker: (IF)

14:00 → 14:15 Break

Speaker: (IF)

14:15 → 15:15 Talk9, Talk10

Speaker: (IF)

15:15 → 15:30 Break

Speaker: (IF)

15:30 → 16:30 Public talk

Speaker: (IF)