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20042025
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations

Showing hep-thShow all

11 papers · 1 filter

hep-th2022★ 1 cited

Quantum matrix geometry in the lowest Landau level and higher Landau levels

Kazuki Hasebe

One of the most celebrated works of Professor Madore is the introduction of fuzzy sphere. I briefly review how the fuzzy two-sphere and its higher dimensional cousins are realized…

hep-th2021★ 7 cited

Landau Model and 4D Quantum Hall Effect in The Monopole Background

Kazuki Hasebe

We investigate the Landau problem in the monopole gauge field background by applying the techniques of the non-linear realization of quantum field theory. The $SO(4…

hep-th2021

Hosotani mechanism in the "color"-singlet plasma

Nahomi Kan, Koichiro Kobayashi, Kiyoshi Shiraishi

By projecting the partition function on the "color"-singlet state, we investigate the Hosotani mechanism in the fermion-gauge boson plasma. The present toy-model analysis of the on…

hep-th2020★ 2 cited

A Unified Construction of Skyrme-type Non-linear sigma Models via The Higher Dimensional Landau Models

Kazuki Hasebe

A curious correspondence has been known between Landau models and non-linear sigma models: Reinterpreting the base-manifolds of Landau models as field-manifolds, the Landau models…

hep-th2020★ 14 cited

Landau Models and Nested Nambu Matrix Geometry

Kazuki Hasebe

The Landau model is the mathematical platform of the 4D quantum Hall effect and provide a rare opportunity for a physical realization of the fuzzy four-sphere. We present a…

hep-th2019★ 35 cited

Hyperbolic field space and swampland conjecture for DBI scalar

Shuntaro Mizuno, Shinji Mukohyama, Shi Pi +1

We study a model of two scalar fields with a hyperbolic field space and show that it reduces to a single-field Dirac-Born-Infeld (DBI) model in the limit where the field space beco…

hep-th2017★ 1 cited

The superspace representation of Super Yang-Mills theory on NCG

Masafumi Shimojo, Satoshi Ishihara, Hironobu Kataoka +2

A few years ago, we found the supersymmetric(SUSY) counterpart of the spectral triple which specified noncommutative geometry(NCG). Based on "the triple", we considered the SUSY ve…

hep-th2017★ 15 cited

Landau Models and Matrix Geometry

Kazuki Hasebe

We develop an in-depth analysis of the Landau models on in the monopole background and their associated matrix geometry. The Schwinger and Dirac gauges for th…

hep-th2016

Supergravity on the noncommutative geometry

Masafumi Shimojo, Satoshi Ishihara, Hironobu Kataoka +2

Two years ago, we found the supersymmetric counterpart of the spectral triple which specified noncommutative geometry. Based on the triple, we derived gauge vector supermultiplets,…

hep-th2015★ 5 cited

Size scaling of self gravitating polymers and strings

Shoichi Kawamoto, Toshihiro Matsuo

We study a statistical ensemble of a single polymer with self gravitational interaction. This is a model of a gravitating string --- the precursor of a black hole. We analyze avera…

hep-th2006★ 46 cited

Realizing Scale-invariant Density Perturbations in Low-energy Effective String Theory

Zong-Kuan Guo, Nobuyoshi Ohta, Shinji Tsujikawa

We discuss the realization of inflation and resulting cosmological perturbations in the low-energy effective string theory. In order to obtain nearly scale-invariant spectra of den…