March 05, 2026

Standard Model from superstring theory

SOKENDAI Student Dispatch Program program year: 2025

Worapat PIENSUK

Particle and Nuclear Physics

 

Schematic summary of research motivation and results
Schematic summary of research motivation and results

With the IKKT matrix model as a complete theory of everything, it should explain the Standard Model. In this research, we found evidence that the elementary particles in the Standard Model can indeed be described by the IKKT matrix model.

Superstring theory is a prime candidate for a theory that can explain all four forces of nature. However, it fails to explain why spacetime is three-dimensional. The IKKT matrix model was proposed as a model, strongly connected to superstring theory, which can answer such a fundamental question, supported by much evidence over the years. For the IKKT matrix model to truly be a complete theory of everything, it should also be able to explain why an “exact” set of particles in the Standard Model is necessary to describe three forces, except gravity. Despite many attempts, this still remains an open question. In this research, we transformed the IKKT matrix model to a more field theoretic picture, which resulted in a simpler and more straightforward investigation. With our setup, we found 4 generations of quarks and leptons. Despite a slight difference from the 3 generations in the Standard Model, this marks an important milestone in the research of the IKKT matrix model as a complete theory of everything. We are currently exploring other possible setup that results in a consistency with the Standard Model.

Period of Stay

Date of Departure: 2025/09/29
Date of Return: 2025/12/27

Country and/or City

Taipei, Taiwan

Visiting Institute, Host, or Meeting

National Taiwan University, Host: Professor Pei-Ming Ho

What you learned and achieved during the visit

During my PhD studies, my research mainly focuses on investigating physical systems using numerical methods. During my visit to NTU, I had an opportunity to explore a new direction of research, including advanced usage of group theory in string compactification, which I have had little experience in. Therefore, the Dispatch Program has given me an opportunity to expand my research repertoire which is beneficial for my future career.

Department of Particle and Nuclear Physics, Worapat PIENSUK

I graduated from KMUTT in Bangkok with a degree in Mechanical Engineering. Following this, I enrolled in the 5-year doctoral course at the Department of Particle and Nuclear Physics, SOKENDAI. My research focuses on understanding the beginning of the Universe, including why it is four-dimensional (three spatial dimensions and one temporal dimension) and expanding.

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