66 research outputs found
Chiral Generations on Intersecting 5-branes in Heterotic String Theory
We show that there exist two 27 and one 27 bar of E6, net one D=4, N=1 chiral
matter supermultiplet as zero modes localized on the intersection of two
5-branes in the E8 x E8 heterotic string theory. The smeared intersecting
5-brane solution is used via the standard embedding to construct a heterotic
background, which provides, after a compactification of some of the transverse
dimensions, a five-dimensional Randall-Sundrum II like brane-world set-up in
heterotic string theory. As a by-product, we present a new proof of anomaly
cancellation between those from the chiral matter and the anomaly inflow onto
the brane without small instanton.Comment: 26 pages, 5 figures; references added, typo correcte
Homogeneous heterotic supergravity solutions with linear dilaton
I construct solutions to the heterotic supergravity BPS-equations on products
of Minkowski space with a non-symmetric coset. All of the bosonic fields are
homogeneous and non-vanishing, the dilaton being a linear function on the
non-compact part of spacetime.Comment: 36 pages; v2 conclusion updated and references adde
Taub-NUT Crystal
We consider the Gibbons-Hawking metric for a three-dimensional periodic array
of multi-Taub-NUT centers, containing not only centers with a positive NUT
charge but also ones with a negative NUT charge. The latter are regarded as
representing the asymptotic form of the Atiyah-Hitchin metric. The periodic
arrays of Taub-NUT centers have close parallels with ionic crystals, where the
Gibbons-Hawking potential plays the role of the Coulomb static potential of the
ions, and are similarly classified according to their space groups. After a
periodic identification and a Z2 projection, the array is transformed by
T-duality to a system of NS5-branes with the SU(2) structure, and a further
standard embedding yields, though singular, a half-BPS heterotic 5-brane
background with warped compact transverse dimensions. A discussion is given of
the possibility of probing the singular geometry by two-dimensional gauge
theories.Comment: 31 pages, 19 figure
Piezo1-pannexin-1-P2X3 axis in odontoblasts and neurons mediates sensory transduction in dentinal sensitivity
©2022 Ohyama, Ouchi, Kimura, Kurashima, Yasumatsu, Nishida, Hitomi, Ubaidus, Kuroda, Ito, Takano, Ono, Mizoguchi, Katakura and Shibukawa. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms
Adaptive servoventilation versus oxygen therapy for sleep disordered breathing in patients with heart failure: a randomised trial
New Entry for Synthesis of N-Acylhydrazones, Pyridazinones, and 1,3,4-Oxadiazin-6-ones from α-Amino Acid Esters
Piezo1-pannexin-1-P2X3 axis in odontoblasts and neurons mediates sensory transduction in dentinal sensitivity
Initial design process of the sustainability science ontology for knowledge-sharing to support co-deliberation
- …