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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
    • 1
      Registration
      Speaker: (IF)
    • 2
      Opening Session
      Speaker: Sikarin Yoo-Kong (IF)
    • 3
      Review of GR
      Speaker: Apimook Watcharangkool (IF)
    • 4
      Coffee Break
      Speaker: (IF)
    • 5
      Review of Field Theory
      Speaker: Pongwit Srisangyingcharoen (IF)
    • 6
      Lunch
      Speaker: (IF)
    • 7
      Review of constraint analysis
      Speaker: Pichet Vanichchapongjaroen (IF)
    • 8
      Coffee Break
      Speaker: (IF)
    • 9
      Review of cosmology
      Speaker: Pitayuth Wongjun (IF)
    • 10
      Coffee Break
      Speaker: (IF)
    • 11
      Introduction to modified gravity theories
      Speaker: Khamphee Karwan (IF)
    • 12
      Dinner
      Speaker: (IF)
    • 13
      Tutorial
      Speaker: North, Ratch, A, Ngung (IF)
  • Thursday 11 June
    • 14
      Stability
      Speaker: Eugeny Babichev (IF)
    • 15
      Coffee Break
      Speaker: (IF)
    • 16
      Causality
      Speaker: Eugeny Babichev (IF)
    • 17
      Lunch
      Speaker: (IF)
    • 18
      Cauchy problem in gravity theories I
      Speaker: Eugeny Babichev (IF)
    • 19
      Coffee Break
      Speaker: (IF)
    • 20
      Cauchy problem in gravity theories II
      Speaker: Eugeny Babichev (IF)
    • 21
      Coffee Break
      Speaker: (IF)
    • 22
      Cauchy problem in gravity theories III
      Speaker: Eugeny Babichev (IF)
    • 23
      Dinner
      Speaker: (IF)
    • 24
      Tutorial
      Speaker: North, Ratch, A, Ngung (IF)
  • Friday 12 June
    • 25
      Scalar tensor theory
      Speaker: Eugeny Babichev (IF)
    • 26
      Coffee Break
      Speaker: (IF)
    • 27
      Horndeski theory 1
      Speaker: Eugeny Babichev (IF)
    • 28
      Lunch
      Speaker: (IF)
    • 29
      Horndeski theory 2
      Speaker: Eugeny Babichev (IF)
    • 30
      Coffee Break
      Speaker: (IF)
    • 31
      GLPV theories 1
      Speaker: Eugeny Babichev (IF)
    • 32
      Coffee Break
      Speaker: (IF)
    • 33
      GLPV theories 2
      Speaker: Eugeny Babichev (IF)
    • 34
      Dinner
      Speaker: (IF)
    • 35
      Tutorial
      Speaker: North, Ratch, A, Ngung (IF)
  • Saturday 13 June
    • 36
      DHOST and U-DHOST theories
      Speaker: Antonio de Felice (IF)
    • 37
      Coffee Break
      Speaker: (IF)
    • 38
      Applications of the DHOST theories to the real world
      Speaker: Antonio de Felice (IF)
    • 39
      Lunch
      Speaker: (IF)
    • 40
      MMG theory
      Speaker: Antonio de Felice (IF)
    • 41
      Coffee Break
      Speaker: (IF)
    • 42
      Applications of the MMG theory to the real world
      Speaker: Antonio de Felice (IF)
    • 43
      Students talk 1
      Speaker: (IF)
    • 44
      Students talk 2
      Speaker: (IF)
    • 45
      Dinner
      Speaker: (IF)
    • 46
      Tutorial
      Speaker: North, Ratch, A, Ngung (IF)
  • Sunday 14 June
    • 47
      Students talk 3
      Speaker: (IF)
    • 48
      Coffee Break
      Speaker: (IF)
    • 49
      Talk 1, Talk 2
      Speaker: (IF)
    • 50
      Lunch
      Speaker: (IF)
    • 51
      Excursion
      Speaker: (IF)
    • 52
      Dinner
      Speaker: (IF)
  • Monday 15 June
    • 53
      Introduction to Effective Field Theory 1
      Speaker: Vicharit Yingcharoenrat (IF)
    • 54
      Coffee Break
      Speaker: (IF)
    • 55
      Introduction to Effective Field Theory 2
      Speaker: Vicharit Yingcharoenrat (IF)
    • 56
      Lunch
      Speaker: (IF)
    • 57
      Review of Goldstone Bosons in Effective Field Theory
      Speaker: Vicharit Yingcharoenrat (IF)
    • 58
      Coffee Break
      Speaker: (IF)
    • 59
      Effective Field Theory of Inflation/Dark Energy
      Speaker: Vicharit Yingcharoenrat (IF)
    • 60
      Coffee Break
      Speaker: (IF)
    • 61
      Applications of Effective Field Theory and Outlook
      Speaker: Vicharit Yingcharoenrat (IF)
    • 62
      Dinner
      Speaker: (IF)
    • 63
      Tutorial
      Speaker: North, Ratch, A, Ngung (IF)
  • Tuesday 16 June
    • 64
      Talk 3, Talk 4
      Speaker: (IF)
    • 65
      Coffee Break
      Speaker: (IF)
    • 66
      Talk 5, Talk 6
      Speaker: (IF)
    • 67
      Lunch
      Speaker: (IF)
    • 68
      Talk 7, Talk 8
      Speaker: (IF)
    • 69
      Coffee Break
      Speaker: (IF)
    • 70
      Talk 9, Talk 10
      Speaker: (IF)
    • 71
      Coffee Break
      Speaker: (IF)
    • 72
      Talk 11, Talk 12
      Speaker: (IF)