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Fujii, Daisuke; Kawaguchi, Mamiya*; Tanaka, Mitsuru*
Physics Letters B, 866, p.139559_1 - 139559_7, 2025/07
Times Cited Count：4 Percentile：95.79(Astronomy & Astrophysics)We investigate the confining pressure inside the nucleon and the associated gravitational form factor, known as the D-term, within a skyrmion based on the scale-invariant chiral perturbation theory. In this approach, the effects of scale symmetry breaking are incorporated through the coupling of a scalar meson field to the scale anomaly, following the low-energy theorem. Utilizing the decomposition of the nucleon's energy-momentum tensor, we clarify how the scale anomaly components contribute to the internal pressure. Our analysis reveals that the gluon-induced scale anomaly predominantly governs the confining pressure. Compared to the result in the chiral limit of conventional chiral perturbation theory, this approach yields a total pressure profile more consistent with lattice QCD data. Furthermore, the pressure due to the gluonic anomaly extends over a wide spatial region, leading to a significant contribution to the D-term.
Taguchi, Miki*; Miyata, Noboru*; Miyazaki, Tsukasa*; Aoki, Hiroyuki; Ozawa, Satoru*; Hasegawa, Ryuichi*; Morimitsu, Yuma*; Kawaguchi, Daisuke*; Yamamoto, Satoru*; Tanaka, Keiji*
Polymer Journal, 7 Pages, 2025/03
Times Cited Count：0 Percentile：0.00(Polymer Science)Liu, Y.*; Miyata, Noboru*; Miyazaki, Tsukasa*; Shundo, Atsuomi*; Kawaguchi, Daisuke*; Tanaka, Keiji*; Aoki, Hiroyuki
ACS Applied Materials & Interfaces, 8 Pages, 2025/00
Kawano, Masayuki*; Morimitsu, Yuma*; Liu, Y.*; Miyata, Noboru*; Miyazaki, Tsukasa*; Aoki, Hiroyuki; Kawaguchi, Daisuke*; Yamamoto, Satoru*; Tanaka, Keiji*
Macromolecules, 57(14), p.6625 - 6633, 2024/07
Times Cited Count：0 Percentile：0.00(Polymer Science)Liu, Y.*; Miyata, Noboru*; Miyazaki, Tsukasa*; Shundo, Atsuomi*; Kawaguchi, Daisuke*; Tanaka, Keiji*; Aoki, Hiroyuki
Langmuir, 39(29), p.10154 - 10162, 2023/06
Times Cited Count：13 Percentile：75.14(Chemistry, Multidisciplinary)Yamaguchi, Ko*; Kawaguchi, Daisuke*; Miyata, Noboru*; Miyazaki, Tsukasa*; Aoki, Hiroyuki; Yamamoto, Satoru*; Tanaka, Keiji*
Physical Chemistry Chemical Physics, 24(36), p.21578 - 21582, 2022/09
Times Cited Count：14 Percentile：80.81(Chemistry, Physical)Miyazaki, Tsukasa*; Miyata, Noboru*; Yoshida, Tessei*; Arima, Hiroshi*; Tsumura, Yoshihiro*; Torikai, Naoya*; Aoki, Hiroyuki; Yamamoto, Katsuhiro*; Kanaya, Toshiji*; Kawaguchi, Daisuke*; et al.
Langmuir, 36(13), p.3415 - 3424, 2020/04
Times Cited Count：19 Percentile：60.55(Chemistry, Multidisciplinary)Miyazaki, Tsukasa*; Miyata, Noboru*; Asada, Mitsunori*; Tsumura, Yoshihiro*; Torikai, Naoya*; Aoki, Hiroyuki; Yamamoto, Katsuhiro*; Kanaya, Toshiji*; Kawaguchi, Daisuke*; Tanaka, Keiji*
Langmuir, 35(34), p.11099 - 11107, 2019/08
Times Cited Count：27 Percentile：67.47(Chemistry, Multidisciplinary)Kawaguchi, Munemichi; Doi, Daisuke; Seino, Hiroshi; Miyahara, Shinya
Journal of Nuclear Science and Technology, 53(12), p.2098 - 2107, 2016/12
Times Cited Count：6 Percentile：44.70(Nuclear Science & Technology)A sodium concrete reaction (SCR) is one of the important phenomena to cause the structural concrete ablation and the release of H
gas in the case of sever accident of sodium cooled fast reactors. In this study, the long-time SCR test had been carried out to investigate the self-termination mechanism. The results showed the SCR terminated even if the enough amount of Na remained on the concrete. The quantitative data were collected on the SCR terminating such as temperature and H generation. The reaction products, which became the small solids in liquid Na were transferred with slurry state by generated H bubbles. Though the Na transfers actively and ablated the concrete surface with the high H generation rate, the mass exchange coefficient defined as 
decreased and the reaction products settled gradually with decreasing the H generation rate. Therefore, the Na concentration decreased at the reaction front and resulted in the SCR terminating naturally.
Kawaguchi, Munemichi; Doi, Daisuke; Seino, Hiroshi; Miyahara, Shinya
Proceedings of 23rd International Conference on Nuclear Engineering (ICONE-23) (DVD-ROM), 6 Pages, 2015/05
CONTAIN-LMR code is an integrated analysis tool to predict the consequence of severe accident in a liquid metal fast reactor. A sodium-concrete reaction is one of the most important phenomena, and Sodium-Limestone Concrete Ablation Model (SLAM) has been installed into the original CONTAIN code. The SLAM treats chemical reaction kinetics between the sodium and the concrete compositions mechanistically, the application is limited to the limestone concrete. In order to apply SLAM to the siliceous concrete which is an ordinary structural concrete in Japan, the chemical reaction kinetics model has been improved. The improved model was validated to analyze a series of sodium-concrete experiments which were conducted in Japan Atomic Energy Agency. It has been found that relatively good agreement between calculation and experimental results is obtained and the CONTAIN-LMR code has been validated with regard to the sodium-concrete reaction phenomena.
Fujii, Daisuke; Kawaguchi, Mamiya*; Tanaka, Mitsuru*
no journal, ,
Elucidating how quarks and gluons are confined in hadrons is a central challenge in QCD. Progress requires clarifying the roles of non-perturbative phenomena, chiral and gluon condensates and the associated spontaneous and anomaly-induced symmetry breaking, in hadron formation. The proton's internal stress distribution has recently become measurable via extraction from gravitational form factors of the energy-momentum tensor, directly characterizing the confining forces and offering a new perspective. In this talk, I will present nucleon gravitational form factors and stress distributions within an extended Skyrme model that faithfully incorporates both chiral and scale symmetries. I will focus on how the scale anomaly shapes the nucleon's pressure distribution and on its essential role in ensuring nucleon stability.
Uno, Masayoshi*; Ohno, Shuji; Kawaguchi, Munemichi; Doi, Daisuke; Tsukimori, Kazuyuki
no journal, ,
no abstracts in English
Suzuki, Akihiro*; Endo, Yoichi*; Inagaki, Yaohiro*; Arima, Tatsumi*; Muroya, Yusa*; Endo, Keita*; Watanabe, Daisuke*; Matsumura, Tatsuro; Ishii, Katsunori; Kawaguchi, Koichi
no journal, ,
no abstracts in English
Kawaguchi, Munemichi; Doi, Daisuke; Masuyama, Daisuke; Seino, Hiroshi; Konishi, Kensuke; Miyahara, Shinya
no journal, ,
As the purpose of investigation on terminating mechanism of Na-concrete reaction, the long-time test in which Na continued to be heated than threshold temperature was conducted. Under the condition that enough amount of Na existed and continued to be heated, we confirmed that the reaction stopped.
Kawaguchi, Daisuke*; Yonemori, Sigeki*; Ogata, Yudai*; Miyata, Noboru*; Yoshida, Tetsuo*; Miyazaki, Tsukasa*; Aoki, Hiroyuki; Tanaka, Keiji*
no journal, ,
Fujii, Daisuke; Kawaguchi, Mamiya*; Tanaka, Mitsuru*
no journal, ,
Elucidating the mechanism by which quarks and gluons are confined inside hadrons is one of the most fundamental problems in QCD. Addressing this issue requires understanding the roles of the quark and gluon condensates and the associated spontaneous symmetry breaking in hadron formation. Recently, the stress distribution inside the proton has become experimentally accessible, extracted from the gravitational form factors that characterize matrix elements of the energy-momentum tensor. Because this stress distribution represents the confining forces that bind quarks and gluons inside hadrons, it opens a new avenue to the problem from the perspective of internal forces. In this talk, by examining how phenomena such as the quark and gluon condensates contribute to the pressure distribution inside the nucleon, I will show that these effects are indispensable for its stability.
