Výsledky vyhledávání - "Akifumi, Sako"

Akademický článek

Exact Solutions v.s. Perturbative Calculations of Finite Φ3-Φ4 Hybrid-Matrix-Model

Publikováno v: Nuclear Physics B, Vol 992, Iss , Pp 116249- (2023)

There is a matrix model corresponding to a scalar field theory on noncommutative spaces called Grosse-Wulkenhaar model (Φ4 matrix model), which is renormalizable by adding a harmonic oscillator potential to scalar Φ4 theory on Moyal spaces. There a

Externí odkaz: https://doaj.org/article/a76ed1399bed4e739066ca5b47c2ac15

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Akademický článek

Category of quantizations and inverse problem

Autor: Akifumi Sako

Publikováno v: Nuclear Physics B, Vol 989, Iss , Pp 116146- (2023)

We introduce a category composed of all quantizations of all Poisson algebras. By the category, we can treat in a unified way the various quantizations for all Poisson algebras and develop a new classical limit formulation. This formulation proposes

Externí odkaz: https://doaj.org/article/bd613b2235d04aa4bfbd8cc924985547

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Akademický článek

Exact solution of the Φ23 finite matrix model

Autor: Naoyuki Kanomata, Akifumi Sako

Publikováno v: Nuclear Physics B, Vol 982, Iss , Pp 115892- (2022)

We find the exact solutions of the Φ23 finite matrix model (Grosse-Wulkenhaar model). In the Φ23 finite matrix model, multipoint correlation functions are expressed as G|a11…aN11|…|a1B…aNBB|. The ∑i=1BNi-point function denoted by G|a11…aN

Externí odkaz: https://doaj.org/article/5ac66fe380124412b731e7ef84b0ccdc

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Akademický článek

Development of 4G CMUT (CMUT Linear SML44 probe)

Autor: Tsuyoshi Otake, Hiroki Tanaka, Akifumi Sako, Makoto Fukada, Kengo Imagawa, Masahiro Sato

Publikováno v: Advanced Ultrasound in Diagnosis and Therapy, Vol 4, Iss 4, Pp 379-382 (2020)

In 2009, Hitachi commercialized “Mappie*1, the world’s first Capacitive Micro-machined Ultrasound Transducer (CMUT) using semiconductor based technology. It generated high quality diagnostic images of mammary glands, thanks to its broad-band char

Externí odkaz: https://doaj.org/article/5b428a5276af4af4a263eded03d7873b

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Definite integral teaching materials for conducting experiments with actual products aimed at deep learning of students

Autor: Akifumi, Sako, Chizuru, Okonogi, Jumpei, Gohara

Publikováno v: 東京理科大学教職教育研究第8号. 8:23-34

高校数学では、定積分の指導について、「定積分と面積の概念」が結びつきにくいとの指摘がされている。本研究は、区分求積法を題材とし、現物実験を用いて発見的に原始関数との関�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=jairo_______::cc1c55ce88c87ee4904e20bf631e2718
http://id.nii.ac.jp/1275/00003747/

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Akademický článek

The Φ43 and Φ63 matricial QFT models have reflection positive two-point function

Autor: Harald Grosse, Akifumi Sako, Raimar Wulkenhaar

Publikováno v: Nuclear Physics B, Vol 926, Iss C, Pp 20-48 (2018)

We extend our previous work (on D=2) to give an exact solution of the ΦD3 large-N matrix model (or renormalised Kontsevich model) in D=4 and D=6 dimensions. Induction proofs and the difficult combinatorics are unchanged compared with D=2, but the re

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Akademický článek

Exact solution of matricial Î¦23 quantum field theory

Autor: Harald Grosse, Akifumi Sako, Raimar Wulkenhaar

Publikováno v: Nuclear Physics B, Vol 925, Iss , Pp 319-347 (2017)

We apply a recently developed method to exactly solve the Î¦3 matrix model with covariance of a two-dimensional theory, also known as regularised Kontsevich model. Its correlation functions collectively describe graphs on a multi-punctured 2-sphere

Externí odkaz: https://doaj.org/article/b7a75815928f44fb8d30bbe39d471213

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Deformaion Quantization with Separation of Variables for Complex Two-Dimensional Locally Symmetric Kähler Manifold

Autor: Taika Okuda, Akifumi Sako

Publikováno v: Journal of Geometry and Symmetry in Physics. 64:39-49

A construction methods of noncommutative locally symmetric K\"ahler manifolds via a deformation quantization with separation of variables was proposed by Sako-Suzuki-Umetsu and Hara-Sako. This construction gives the recurrence relations to determine

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c7f8ecf245aefd87cea13bf61c445fe5
https://doi.org/10.7546/jgsp-64-2022-39-49

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Explicit formula of deformation quantization with separation of variables for complex two-dimensional locally symmetric Kähler manifold

Autor: Taika Okuda, Akifumi Sako

Publikováno v: International Journal of Geometric Methods in Modern Physics. 20

We give a complex two-dimensional noncommutative locally symmetric Kähler manifold via a deformation quantization with separation of variables. We present an explicit formula of its star product by solving the system of recurrence relations given by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7d2ea88f9fbfdf16d171a326254e3d70
https://doi.org/10.1142/s0219887823501098

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