Zobrazeno 1 - 10
of 59
pro vyhledávání: '"Machiko Hatsuda"'
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-66 (2023)
Abstract In this paper, the A $$ \mathcal{A} $$ -theory, an extension of F-theory, is described as a fully U-duality covariant brane theory. This theory has some distinguishing features not known from world-sheet models. In particular, seen as a sigm
Externí odkaz:
https://doaj.org/article/9617b51ee0244dc78d430d1fdf16c26f
Autor:
Machiko Hatsuda, Hiroaki Kawasaki, Ayako Shigenaga, Atsushi Taketani, Takaoki Takanashi, Yasuo Wakabayashi, Yoshie Otake, Yayoi Kamata, Akari Ichinose, Honoka Nishioka, Hayato Kimura, Yumi Koganei, Shiomi Komoriya, Miyu Sakai, Yui Hamano, Maria Yoshida, Fumiyuki Yamakura
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract The impact of deep space cosmic rays on food resources is as important as the risks of cosmic rays to the human body. This study demonstrates the potential for neutrons as secondary radiation in deep space spacecraft to cause meat activation
Externí odkaz:
https://doaj.org/article/a960c96737ff4aac8e31272c30ee229b
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 5, Pp 1-18 (2023)
Abstract We study the O(D, D + n) generalized metric and the gauge symmetries in the gauged double field theory (DFT) in view of current algebras and sigma models. We show that the O(D, D + n) generalized metric in the gauged DFT is consistent with t
Externí odkaz:
https://doaj.org/article/d21a6c2ae72b4267861e97417ace231a
Autor:
Machiko Hatsuda, Warren Siegel
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 4, Pp 1-22 (2022)
Abstract We include in F-theory, through open Type I F-theory branes (F-branes), string theories with N = 1 supersymmetry, both Type I and heterotic. Type I branes are distinguished from Type II by worldvolume parity projection. The same open Type I
Externí odkaz:
https://doaj.org/article/8d4e12b80c3c4ef1934a48e0b98dbcf3
Autor:
Machiko Hatsuda, Warren Siegel
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 11, Pp 1-35 (2021)
Abstract The exceptional symmetry is realized perturbatively in F-theory which is the manifest U-duality theory. The SO(5) U-duality symmetry acts on both the 16 space-time coordinates and the 10 worldvolume coordinates. Closure of the Virasoro algeb
Externí odkaz:
https://doaj.org/article/e6455c37d4fd4e39ae88d9bdb5ca6c82
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 3, Pp 1-29 (2021)
Abstract We study the current algebras of the NS5-branes, the Kaluza-Klein (KK) five-branes and the exotic 5 2 2 $$ {5}_2^2 $$ -branes in type IIA/IIB superstring theories. Their worldvolume theories are governed by the six-dimensional N $$ \mathcal{
Externí odkaz:
https://doaj.org/article/4d61ea22cd2242e2b50c4aec5caffd4e
Autor:
Machiko Hatsuda, Warren Siegel
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 3, Pp 1-20 (2020)
Abstract We present superstring Lagrangians with manifest T-duality. The Lagrangian version of the section conditions are necessary to make Lagrangians to be general coordinate invariant. We show the general solution of section conditions. The D-dime
Externí odkaz:
https://doaj.org/article/354c26ccb92644f881a1edce4a18d131
Autor:
Machiko Hatsuda, Warren Siegel
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 2, Pp 1-16 (2019)
Abstract We present the string Lagrangian with manifest T-duality. Not only zero-modes but also all string modes are doubled. The gravitational field is an O(D, D) gauge field. We give a Lagrangian version of the section condition for the gauge invar
Externí odkaz:
https://doaj.org/article/2e4e9022d53a4c1f84057289683c73aa
Publikováno v:
Journal of High Energy Physics, Vol 2017, Iss 5, Pp 1-37 (2017)
Abstract We present a manifestly T-dual formulation of curved spaces such as an AdS space. For group manifolds related by the orthogonal vielbein fields the three form H = dB in the doubled space is universal at least locally. We construct an affine
Externí odkaz:
https://doaj.org/article/8ad563930842458fa74d4070c50227fb
Autor:
Machiko Hatsuda, Hiroaki Kawasaki, Fumiyuki Yamakura, Atsushi Taketani, Takaoki Takanashi, Yasuo Wakabayashi, Yoshie Otake, Yayoi Kamata, Chie Kurokawa, Keiichi Ikeda, Ayako Shigenaga, Takafumi Iesaki, Isao Nagaoka
Publikováno v:
Journal of Neutron Research. 25:41-46
One of the major challenges in deep space exploration are effects of cosmic rays on human body and soft error, but equally important are their effects on food resources. In this study, we focused on neutrons as the secondary particle in the deep spac