335,252 research outputs found
The Sakai-Sugimoto soliton
No full textThe Sakai-Sugimoto model is the preeminent example of a string theory description of holographic QCD, in which baryons correspond to topological solitons in the bulk. Here we investigate the validity of various approximations of the Sakai-Sugimoto soliton that are used widely to study the properties of holographic baryons. These approximations include the flat space self-dual instanton, a linear expansion in terms of eigenfunctions in the holographic direction and an asymptotic power series at large radius. These different approaches have produced contradictory results in the literature regarding properties of the baryon, such as relations for the electromagnetic form factors. Here we determine the regions of validity of these various approximations and show how to relate different approximations in contiguous regions of applicability. This analysis clarifies the source of the contradictory results in the literature and resolves some outstanding issues, including the use of the flat space self-dual instanton, the detailed properties of the asymptotic soliton tail, and the role of the UV cutoff introduced in previous investigations. A consequence of our analysis is the discovery of a new large scale, that grows logarithmically with the 't Hooft coupling, at which the soliton fields enter a nonlinear regime. Finally, we provide the first numerical computation of the Sakai-Sugimoto soliton and demonstrate that the numerical results support our analysis. © 2014 The Author(s)
Introduction
No full textThis is the introduction to a special issue of the journal "Translation", dedicated to "Politics" and edited by Sandro Mezzadra and Naoki Sakai.
Over the last decades the encounter with cultural and postcolonial studies has deeply influenced the development of translation studies. The study of the conditions of translation, and more radically of what Antonio Gramsci would call “translatability,” has led to an emphasis on the issue of power and deep asymmetries between languages, and social and “cultural” groups. The “politics of translation” has emerged as a fundamental topic, even for the more technical debates within translation studies, while the concept of translation itself has been politicized and used as a theoretical tool in discussions of nationality, citizenship, multiculturalism, and globalization. By staging an encounter between scholars who work on the politics of translation and those involved in the politicization of the concept of translation, this special issue of Translation attempts to take stock of the theoretical developments and achievements in the field. The editors' introduction sets the stage for such an encounter
Parilia major Sakai 1961
No full textParilia major Sakai, 1961 Parilia major Sakai, 1961: 137, pl. 3, fig. 5 (type locality: Tosa Bay, Japan). Material examined PAPUA NEW GUINEA, Huon Gulf: BIOPAPUA Stn CP 3630, 06°54’ S, 147°03’ E, 305–307 m, 22 Aug. 2010, 1 ♀, ovi, cl 45.8 mm (MNHN-IU-2011-1133); 1 ♀, ovi, cl 45.0 mm (MNHN-IU-2011-1520). BIOPAPUA Stn CP 3633, 06°54’ S, 147°05’ E, 395–406 m, 22 Aug. 2010, 1 ♀, cl 47.5 mm (MNHN- IU-2011-1141); 2 ♂♂, cl 23.3, 23.2 mm (MNHN-IU-2011-1027). BIOPAPUA Stn CP 3665, 04°50’ S, 151°38’ E, 225–340 m, 23 Sep. 2010, 1 ♂, cl 38.3 mm (MNHN-IU-2011-1368). Distribution Indonesia, Philippines, Taiwan, Japan, Solomon Is, 90-425 m (Galil 2007, Galil & Ng 2007).Published as part of Galil, Bella S., 2015, On a collection of Leucosioidea (Crustacea, Decapoda, Brachyura) from Papua New Guinea, with the description of a new species, pp. 1-10 in European Journal of Taxonomy 155 on pages 4-5, DOI: 10.5852/ejt.2015.155, http://zenodo.org/record/378800
53. Sakai
No full textIwao Seiichi, Iyanaga Teizō, Ishii Susumu, Yoshida Shōichirō, Fujimura Jun'ichirō, Fujimura Michio, Yoshikawa Itsuji, Akiyama Terukazu, Iyanaga Shōkichi, Matsubara Hideichi. 53. Sakai. In: Dictionnaire historique du Japon, volume 17, 1991. Lettres R (2) et S (1) pp. 88-89
Parilia major Sakai 1961
No full textParilia major Sakai, 1961 MATERIAL EXAMINED. — SALOMON 1, stn CP 1801, 9°25.0’S, 160°25.9’E, 264-273 m, 1.X.2001, 6 ♂♂ cl 39.9-59.4 mm, 5 ovigerous ♀♀ cl 40.5-47.2 mm (MNHN B.30173). DISTRIBUTION. — Indonesia, Philippines, Japan, Taiwan, 100-425 m (Chen & Sun 2002), new record for the Solomons.Published as part of Galil, Bella S., 2007, The deep-water Calappidae, Matutidae and Leucosiidae of the Solomon Islands, with a description of a new species of Euclosia Galil, 2003 (Crustacea, Decapoda, Brachyura), pp. 555-563 in Zoosystema 29 (3) on page 560, DOI: 10.5281/zenodo.468995
Exotic s-wave superconductivity in alkali-doped fullerides
No full textAlkali-doped fullerides (A3C60 with A = K, Rb, Cs) show a surprising phase diagram, in which a high transition-temperature (Tc) s-wave superconducting state emerges next to a Mott insulating phase as a function of the lattice spacing. This is in contrast with the common belief that Mott physics and phonon-driven s-wave superconductivity are incompatible, raising a fundamental question on the mechanism of the high-Tc superconductivity. This article reviews recent ab initio calculations, which have succeeded in reproducing comprehensively the experimental phase diagram with high accuracy and elucidated an unusual cooperation between the electron-phonon coupling and the electron-electron interactions leading to Mott localization to realize an unconventional s-wave superconductivity in the alkali-doped fullerides. A driving force behind the exotic physics is unusual intramolecular interactions, characterized by the coexistence of a strongly repulsive Coulomb interaction and a small effectively negative exchange interaction. This is realized by a subtle energy balance between the coupling with the Jahn-Teller phonons and Hund's coupling within the C60 molecule. The unusual form of the interaction leads to a formation of pairs of up- and down-spin electrons on the molecules, which enables the s-wave pairing. The emergent superconductivity crucially relies on the presence of the Jahn-Teller phonons, but surprisingly benefits from the strong correlations because the correlations suppress the kinetic energy of the electrons and help the formation of the electron pairs, in agreement with previous model calculations. This confirms that the alkali-doped fullerides are a new type of unconventional superconductors, where the unusual synergy between the phonons and Coulomb interactions drives the high-Tc superconductivity
Poly(disulfide)s
No full textDon't forget poly(disulfide)s. There is a rich literature pointing out the advantages of the dynamic nature of single disulfide bridges to explore self-sorting, biomolecular engineering, biomembrane analysis, and so on. Disulfide bonds between polymer chains are essential for protein folding, materials properties and the stabilization of various supramolecular architectures. However, poly(disulfide) s with disulfide bonds in the main chain are rarely used today to create interesting structures or functions. To attract attention and outline scope and limitations of poly(disulfide) s to build modern supramolecular systems, the rather eclectic recent literature on the topic is summarized. The review is moving from fascinating basic studies including photoinduced metathesis, polycatenanes and polyrotaxanes to applications in biosupramolecular systems such as micelles, membranes, tubes, gels, carriers, pores, sensors, catalysts and photosystems
Parilia major Sakai 1961
No full textParilia major Sakai, 1961 (Fig. 4 B) Material examined. 1 immature male (35.1 mm) (MNHN-IU- 2013 - 1044), stn CP 3968, east Kranket I., 05° 12 'S 145 ° 51 'E, 380 m, 2.12. 2012. Geographical distribution. Japan, Taiwan, Philippines, Indonesia, Solomon Is., 100–425 m (Galil 2007). New record for Papua New Guinea.Published as part of Galil, Bella S. & Ng, Peter K. L., 2015, Leucosiid crabs from Papua New Guinea, with descriptions of eight new species (Crustacea: Decapoda: Brachyura), pp. 451-486 in Zootaxa 4027 (4) on page 460, DOI: 10.11646/zootaxa.4027.4.1, http://zenodo.org/record/23451
Alienaxiopsis Sakai 2011
No full text<i>Alienaxiopsis</i> Sakai, 2011 <p> <i>Alienaxiopsis</i> Sakai, 2011: 32–33.</p> <p> <i>Type species.</i> <i>Alienaxiopsis lizardensis</i> Sakai, 2011, by original designation.</p> <p> <i>Remarks. Alienaxiopsis</i> was erected to include two species, <i>Alienaxiopsis lizardensis</i> Sakai, 2011 (type species) and <i>A. clypeata</i> (De Man, 1888). Sakai’s (2011) key differentiated the two species but, as explained below, the two are synonymous.</p>Published as part of <i>Poore, Gary C. B., 2018, Burrowing lobsters mostly from shallow coastal environments in Papua New Guinea (Crustacea: Axiidea: Axiidae, Micheleidae), pp. 1-14 in Memoirs of Museum Victoria 77</i> on page 2, DOI: 10.24199/j.mmv.2018.77.01, <a href="http://zenodo.org/record/8065241">http://zenodo.org/record/8065241</a>
54. Sakai-ban
No full textIwao Seiichi, Iyanaga Teizō, Ishii Susumu, Yoshida Shōichirō, Fujimura Jun'ichirō, Fujimura Michio, Yoshikawa Itsuji, Akiyama Terukazu, Iyanaga Shōkichi, Matsubara Hideichi. 54. Sakai-ban. In: Dictionnaire historique du Japon, volume 17, 1991. Lettres R (2) et S (1) p. 89
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