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

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The Institute for fundamental Study, Naresuan University

The Institute for fundamental Study, Naresuan University
Description

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

Theme: Modified Gravity and Theoretical Foundations

Event Details

  • Date: June 10 – 16, 2026

  • Venue: 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). 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.

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

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

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

  • Dr. Vicharit Yingcharoenrat (Department of Physics, Chulalongkorn University)

  • Assoc. Prof. Dr. Pitayuth Wongjun (IF, Naresuan University)

  • Assoc. Prof. Dr. Khamphee Karwan (IF, Naresuan University)

  • Assoc. Prof. Dr. Sikarin Yoo-Kong (IF, Naresuan University)

  • Asst. Prof. Dr. Pichet Vanichchapongjaroen (IF, Naresuan University)

  • Dr. Pongwit Srisangyingcharoen (IF, Naresuan University)

  • Dr. Apimook Watcharangkool (NARIT)

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: North, Ratch, A, Ngung).

  • 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.

Registration Information

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

 

For details contact:
  • Wednesday 10 June
    • 08:30 → 09:30
      Registration 1h
      Speaker: (IF)
    • 09:30 → 09:45
      Opening Session 15m
      Speaker: Sikarin Yoo-Kong (IF)
    • 09:45 → 10:45
      Review of GR 1h
      Speaker: Apimook Watcharangkool (IF)
    • 10:45 → 11:00
      Coffee Break 15m
      Speaker: (IF)
    • 11:00 → 12:00
      Review of Field Theory 1h
      Speaker: Pongwit Srisangyingcharoen (IF)
    • 12:00 → 13:00
      Lunch 1h
      Speaker: (IF)
    • 13:00 → 14:00
      Review of constraint analysis 1h
      Speaker: Pichet Vanichchapongjaroen (IF)
    • 14:00 → 14:15
      Coffee Break 15m
      Speaker: (IF)
    • 14:15 → 15:15
      Review of cosmology 1h
      Speaker: Pitayuth Wongjun (IF)
    • 15:15 → 15:30
      Coffee Break 15m
      Speaker: (IF)
    • 15:30 → 16:30
      Introduction to modified gravity theories 1h
      Speaker: Khamphee Karwan (IF)
    • 16:30 → 18:30
      Dinner 2h
      Speaker: (IF)
    • 18:30 → 20:30
      Tutorial 2h
      Speaker: North, Ratch, A, Ngung (IF)
  • Thursday 11 June
    • 09:45 → 10:45
      Stability 1h
      Speaker: Eugeny Babichev (IF)
    • 10:45 → 11:00
      Coffee Break 15m
      Speaker: (IF)
    • 11:00 → 12:00
      Causality 1h
      Speaker: Eugeny Babichev (IF)
    • 12:00 → 13:00
      Lunch 1h
      Speaker: (IF)
    • 13:00 → 14:00
      Cauchy problem in gravity theories I 1h
      Speaker: Eugeny Babichev (IF)
    • 14:00 → 14:15
      Coffee Break 15m
      Speaker: (IF)
    • 14:15 → 15:15
      Cauchy problem in gravity theories II 1h
      Speaker: Eugeny Babichev (IF)
    • 15:15 → 15:30
      Coffee Break 15m
      Speaker: (IF)
    • 15:30 → 16:30
      Cauchy problem in gravity theories III 1h
      Speaker: Eugeny Babichev (IF)
    • 16:30 → 18:30
      Dinner 2h
      Speaker: (IF)
    • 18:30 → 20:30
      Tutorial 2h
      Speaker: North, Ratch, A, Ngung (IF)
  • Friday 12 June
    • 09:45 → 10:45
      Scalar tensor theory 1h
      Speaker: Eugeny Babichev (IF)
    • 10:45 → 11:00
      Coffee Break 15m
      Speaker: (IF)
    • 11:00 → 12:00
      Horndeski theory 1 1h
      Speaker: Eugeny Babichev (IF)
    • 12:00 → 13:00
      Lunch 1h
      Speaker: (IF)
    • 13:00 → 14:00
      Horndeski theory 2 1h
      Speaker: Eugeny Babichev (IF)
    • 14:00 → 14:15
      Coffee Break 15m
      Speaker: (IF)
    • 14:15 → 15:15
      GLPV theories 1 1h
      Speaker: Eugeny Babichev (IF)
    • 15:15 → 15:30
      Coffee Break 15m
      Speaker: (IF)
    • 15:30 → 16:30
      GLPV theories 2 1h
      Speaker: Eugeny Babichev (IF)
    • 16:30 → 18:30
      Dinner 2h
      Speaker: (IF)
    • 18:30 → 20:30
      Tutorial 2h
      Speaker: North, Ratch, A, Ngung (IF)
  • Saturday 13 June
    • 09:45 → 10:45
      DHOST and U-DHOST theories 1h
      Speaker: Antonio de Felice (IF)
    • 10:45 → 11:00
      Coffee Break 15m
      Speaker: (IF)
    • 11:00 → 12:00
      Applications of the DHOST theories to the real world 1h
      Speaker: Antonio de Felice (IF)
    • 12:00 → 13:00
      Lunch 1h
      Speaker: (IF)
    • 13:00 → 14:00
      MMG theory 1h
      Speaker: Antonio de Felice (IF)
    • 14:00 → 14:15
      Coffee Break 15m
      Speaker: (IF)
    • 14:15 → 15:15
      Applications of the MMG theory to the real world 1h
      Speaker: Antonio de Felice (IF)
    • 15:15 → 16:15
      Students talk 1 1h
      Speaker: (IF)
    • 16:15 → 17:15
      Students talk 2 1h
      Speaker: (IF)
    • 17:15 → 18:30
      Dinner 1h 15m
      Speaker: (IF)
    • 18:30 → 20:30
      Tutorial 2h
      Speaker: North, Ratch, A, Ngung (IF)
  • Sunday 14 June
    • 09:45 → 10:45
      Students talk 3 1h
      Speaker: (IF)
    • 10:45 → 11:00
      Coffee Break 15m
      Speaker: (IF)
    • 11:00 → 12:00
      Talk 1, Talk 2 1h
      Speaker: (IF)
    • 12:00 → 13:00
      Lunch 1h
      Speaker: (IF)
    • 13:00 → 18:30
      Excursion 5h 30m
      Speaker: (IF)
    • 18:30 → 20:30
      Dinner 2h
      Speaker: (IF)
  • Monday 15 June
    • 09:45 → 10:45
      Introduction to Effective Field Theory 1 1h
      Speaker: Vicharit Yingcharoenrat (IF)
    • 10:45 → 11:00
      Coffee Break 15m
      Speaker: (IF)
    • 11:00 → 12:00
      Introduction to Effective Field Theory 2 1h
      Speaker: Vicharit Yingcharoenrat (IF)
    • 12:00 → 13:00
      Lunch 1h
      Speaker: (IF)
    • 13:00 → 14:00
      Review of Goldstone Bosons in Effective Field Theory 1h
      Speaker: Vicharit Yingcharoenrat (IF)
    • 14:00 → 14:15
      Coffee Break 15m
      Speaker: (IF)
    • 14:15 → 15:15
      Effective Field Theory of Inflation/Dark Energy 1h
      Speaker: Vicharit Yingcharoenrat (IF)
    • 15:15 → 15:30
      Coffee Break 15m
      Speaker: (IF)
    • 15:30 → 16:30
      Applications of Effective Field Theory and Outlook 1h
      Speaker: Vicharit Yingcharoenrat (IF)
    • 16:30 → 18:30
      Dinner 2h
      Speaker: (IF)
    • 18:30 → 20:30
      Tutorial 2h
      Speaker: North, Ratch, A, Ngung (IF)
  • Tuesday 16 June
    • 09:45 → 10:45
      Talk 3, Talk 4 1h
      Speaker: (IF)
    • 10:45 → 11:00
      Coffee Break 15m
      Speaker: (IF)
    • 11:00 → 12:00
      Talk 5, Talk 6 1h
      Speaker: (IF)
    • 12:00 → 13:00
      Lunch 1h
      Speaker: (IF)
    • 13:00 → 14:00
      Talk 7, Talk 8 1h
      Speaker: (IF)
    • 14:00 → 14:15
      Coffee Break 15m
      Speaker: (IF)
    • 14:15 → 15:15
      Talk 9, Talk 10 1h
      Speaker: (IF)
    • 15:15 → 15:30
      Coffee Break 15m
      Speaker: (IF)
    • 15:30 → 16:30
      Talk 11, Talk 12 1h
      Speaker: (IF)