Theoretical Physics Laboratory


About us

The Theoretical Physics Laboratory at Tokyo Woman's University, a new laboratory established in 2021, conducts research in theoretical physics in a broad sense, of which the current focus is on particle physics and cosmology.

Member List / Research Grants: Oda, Tomiya

📣 Delighted to welcome Akio Tomiya to our team! He is a rising scholar, also known for supervising artificial intelligence studies in “Shin Kamen Rider.”

📣 The first paper with my first graduate student, Mitani-san, at TWCU has been published! (Kin-ya)

Her Master thesis is also published online (though in Japanese):

Past seminars

News

Seminars in academic year 2024

16:35-18:05, Friday 26th July 2024 (Building 6, Room 6101)
 Kana Moriwaki（Tokyo University）
Large-Scale Structure of the Universe

In the universe, matter and galaxies are known to have a characteristic way of distribution, which is called the cosmic large-scale structure. In this talk, I will explain how the cosmic large-scale structure can be used to explore dark matter and dark energy, which are components of the universe, or the initial state of the universe. I will also introduce recent studies of the large-scale structure of the universe using numerical simulations and observational data analysis using data science methods.

森脇可奈.pdf

16:35-18:05, Friday 19th July 2024 (Building 6, Room 6101)
 Wen Yin（Tokyo Metropolitan University）
The Past, Present, and Future of eV Dark Matter

With a mass of eV (about 10^6th of an electron), dark matter has one of the longest histories of dark matter. In this talk, I will explain why the existence of dark matter is evidence of a new physical law and discuss how it can be investigated now and in the future, focusing on eV dark matter.

殷文.pdf

16:35-18:05, Friday 28th June 2024 (Building 6, Room 6101)
 Kimiko Yamashita（Ibaraki University）
Particle Physics and Dark Matter

 Particle physics is the study of identifying the smallest constituents of matter and explaining the laws of physics in terms of their interactions. The four currently known forces are gravity, electromagnetic force, weak force, and strong force, and the discovery of the Higgs boson confirmed the particle standard theory describing the three forces other than gravity.

 The purpose of particle physics is to explain unknown physical laws, including dark matter, etc., from the interaction of the smallest constituents of matter. In this seminar, I will introduce what particle physics and dark matter are and how they are related. I will also present excerpts from my recent work on dark matter, baryon number production, and cosmic inflation, and discuss recent approaches to high-energy theory and its relevance to particle experiments and observations.

山下公子.pdf
20240628_東京女子大学理論物理研究室セミナー_山下公子_pdf.pdf

16:35-18:05, Friday 14th June 2024 (Building 6, Room 6101)
Ivan  Arraut（University of Saint Joseph）
Implementation of the tools of Quantum Mechanics in scenarios involving finance and economy

 In this presentation I will introduce some of the most useful analogies for analyzing problems in economy and finance by using the well-known tools of Quantum Mechanics. This brings us to the scenario of Quantum Finance where certain financial equations can be expressed in a Hamiltonian/Lagrangian language. 

In this way, we can derive new results by extending important concepts like spontaneous symmetry breaking, gauge symmetries, Higgs mechanism and others. We then show how this scenario helps us to unify the two most important equations, constructed for predicting the prices of Options. Finally, we explain other practical problems where the notions of Quantum Mechanics can play an important role.

IvanArraut.pdf
IvanPresentation.pdf

16:35-18:05, Friday 31st May 2024 (Building 6, Room 6101)
 Joe Sato（Yokohama National University）
LμーLτsymmetry 

　We will discuss the Lμ-Lτ symmetry as a theoretical framework to explain phenomena that cannot be explained by the Standard Model of elementary particles. The Standard Model is a well-developed framework that explains most ground-based particle experiments. However, there are still some things that remain a mystery. These include neutrino masses, the anomalous magnetic moment of muons, the spectrum of cosmic neutrinos observed by IceCube, and the phenomenon known as the Hubble tension. As a framework to solve these problems simultaneously, I will explain the model that extends the Standard Model to have Lμ-Lτ symmetry.

佐藤丈.pdf
佐藤丈.pdf

16:35-18:05, Friday 17th May 2024 (Building 6, Room 6111)
 Yui Hayashi（Kyoto University）
Physics of Quarks and Gluons and Their Vacuum Structure

Protons and neutrons, the fundamental elements of matter, are composed of quarks and gluons. The physics of quarks and gluons is described by a quantum field theory model known as Quantum Chromodynamics (QCD). The theoretical understanding of QCD still harbors many fundamental mysteries, exemplified by the problem of quark confinement: "Why can quarks not be isolated and are only observed as part of protons or neutrons?" This seminar will explore the difficulties and fascinations of the low-energy physics and vacuum structure of QCD. Additionally, it will introduce recent research on the semiclassical analysis of the QCD vacuum through T^2 compactification.

林優依.pdf
QCD_hayashi.pdf

Preprint submitted

Paper published

Presentations

Organization of conferences and workshops