Welcome, Yuriko!

Our second daughter was born today. Her name is Yuriko.
Welcome to our home, Yuriko! It's nice meeting you!

Demolition of parents' house in Jiyugaoka

Since age 14 until 23 I lived in the house with my parents, sister and a maltese dog. Days of study and baseball. It seems like just a yesterday.
I heard that my grandfather Taiichi and his family moved to Jiyugaoka (from Hibarigaoka in Takarazuka City) after the World War II. So the Abe family stayed in the place for more than 60 years, however, after my grandmother Yayoi's passing away last year my uncle and parents decided to leave the place. Good Bye!

Lecture Notes

Hand-written notes prepared for the recent (informal) lecture are digitalized here. The lecture is based on Nair's QFT book.

Lectures on QFT in Tokyo

Recently I was asked to give introductory lectures on Quantum Field Theory
for a general audience who would say, "Well, I have studied up to Quantum Mechanics but ..."
The lectures are at postgraduate level and probably given in Japanese.
Anybody interested in is welcome to join.

Title: QFT and Scattering Amplitudes

Place: The Open University of Japan, Tokyo-Bunkyo Learning Center, 2F Lecture Room
         http://www.sc.ouj.ac.jp/center/bunkyo/about/access.html (Japanese only)

Date: June 30, Sun
      Lecture 1    10:30-12:00
      Lecture 2    13:30-15:00
      Lecture 3    15:20-16:50

Risako entering elementary school

Having completed her six-year nursery school, Risako becomes an elementary school student.
The past six years with you have been a precious time for me.
Congratulations! Enjoy your studies.

Nair's Lecture Notes, draft

First draft is now available here. Please let me know if there are any typos or corrections.

Particle data updated

Particle data screening system is revised with the latest set of data from Particle Data Group. The revised version is here. The total number of listed particles is now 211, increased by 12 from the previous data.

Holonomy paper (vol.5) to appear in Nucl. Phys. B

For details, please refer to
http://dx.doi.org/10.1016/j.nuclphysb.2012.08.003.

Holonomy paper (vol.5) submitted to arXiv

In this paper incorporation of massive particles into the holonomy formalism is carried out for the first time. We have dealt with massive scalar particles this time but we would like to extend the formalism to vector bosons and fermions and, hopefully, search for theories beyond the standard model of particle physics in the forthcoming papers.

Abelian holonomy paper appears in J. Math. Phys.

For details, please refer to
http://link.aip.org/link/doi/10.1063/1.4716186.

Particle data updated

Particle data screening system is now revised with the latest set of data from Particle Data Group. The revised version is here. Following the released information, we omit the quantum-number screening options this time.

Holonomy paper (vol.4) to appear in Nucl. Phys. B

For details, please refer to
http://dx.doi.org/10.1016/j.nuclphysb.2011.08.022.

Holonomy paper (vol.4) submitted to arXiv

Recent studies reveal that gluon amplitudes at loop level can be expressed in terms of polylogarithms. In this paper, we develop a calculatory method for one-loop amplitudes in the framework of holonomy formalism. We show that the one-loop amplitudes are naturally described by a set of polylogarithms via a conventional functional method. This is an interesting result, providing a new perspective to a regularization program, an indispensable part of the quantum field theory. For details, please see the paper here.

A paper on holonomies (vol.3) appears in Nucl. Phys. B, now available online

The article is available at
http://dx.doi.org/10.1016/j.nuclphysb.2010.09.012.
I would like to thank the referee for valuable comments. In the published version, I made a major revision, with some speculative analyses on dark matter removed.

A paper on holonomies (vol.3) submitted to arXiv

The paper is on gravity interpreted as a square of gauge theory. I have been thinking about this topic over five years and now finally get a satisfying answer. The paper is available at arXiv:1008.2800.

Atsuko nominated for Young Investigator Awards of HRS

The award competition is organized by the Heart Rhythm Society and is called the Young Investigator Awards (YIA), now in its 30th year. For more information, see this and this (in Japanese).
Congratulations!

A paper on abelian holonomy formalism submitted to arXiv

In this paper we consider an application of abelian holonomy formalism to elementary number theory and propose an interesting physical interpretation of the Riemann hypothesis. The paper is now available at arXiv:1005.4299.

A paper on M(atrix) theory compactification appears in Phys. Rev. D, now available online

The article is available at
http://link.aps.org/doi/10.1103/PhysRevD.81.046006.
I would like to thank the referee for critical comments; without the comments I would never be able to realize my mistakes in the original version of this paper. So I am grateful to the referee very much.
Accordingly I have revised my doctoral dissertation since it contains most of the materials in the paper. A revised dissertation in an abridged style is now available at
arXiv:1002.4937 [hep-th].

Atsuko soon becomes a PhD in medicine!

The other day Atsuko Abe (my wife) passed an oral exam for her PhD in medicine.
Research subject is something like

Circadian Variation of Late Potentials in Idiopathic Ventricular Fibrillation
Associated with J Waves: Insights into Pathophysiology and Risk Stratification

Congratulations! We are proud of you.
I hope you keep helpful to many patients.

Visit to Yasushi Inoue's literary museum

The museum is located in what is called CLEMATIS-no-OKA near Numazu City, about 120km east of Tokyo. Many original manuscripts of the author's are exhibited. It was a valuable experience.