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Ungaliophis, U. continentalis, U. panamensis
Number of Pages: 4Integrative BiologyGeological Science
A generalized Cartan decomposition for the double coset space U(n_1) x U(n_2) x U(n_3)) U(n) / U(p) x U(q)
Motivated by recent developments on visible actions on complex manifolds, we
raise a question whether or not the multiplication of three subgroups ,
and surjects a Lie group in the setting that carries a complex
structure and contains as a totally real submanifold.
Particularly important cases are when and are generalized flag
varieties, and we classify pairs of Levi subgroups such that , or equivalently, the real generalized flag variety meets
every -orbit on the complex generalized flag variety in the setting
that .
For such pairs , we introduce a \textit{herringbone stitch} method to
find a generalized Cartan decomposition for the double coset space , for which there has been no general theory in the
non-symmetric case.
Our geometric results provides a unified proof of various multiplicity-free
theorems in representation theory of general linear groups
U-operators
Inspired by a statement of W. Luh asserting the existence of entire functions having together with all their derivatives and antiderivatives
some kind of additive universality or multiplicative universality on certain compact subsets of the complex plane or of, respectively, the punctured complex plane, we introduce in this paper the new concept of U-operators, which are defined on the space of entire functions. Concrete examples, including differential and antidifferential operators, composition, multiplication and shift operators, are studied. A result due to Luh, Martirosian and Müller about the existence of universal entire functions with gap power series is also strengthened.Plan Andaluz de Investigación (Junta de AndalucÃa
U-Manifolds
We use non-perturbative U-duality symmetries of type II strings to construct
new vacuum solutions. In some ways this generalizes the F-theory vacuum
constructions. We find the possibilities of new vacuum constructions are very
limited. Among them we construct new theories with N=2 supersymmetry in
3-dimensions and (1, 1) supersymmetry in 2-dimensions.Comment: 11 pages, minor changes in references and text (version to appear in
Phys. Lett. B
TDHF investigations of the U+U quasifission process
The use of actinide collisions have been suggested as a way to produce
neutron rich isotopes of high Z nuclei. The collision dynamics of these
reactions can be studied using unrestricted time-dependent Hartree-Fock (TDHF)
calculations. Here, we report on the recent studies of quasifission for the
U+U system.Comment: Presented at the XXXV Mazurian Lakes Conference on Physics, Piaski,
Poland, September 3-9, 2017
U(2) Flavor Physics without U(2) Symmetry
We present a model of fermion masses based on a minimal, non-Abelian discrete
symmetry that reproduces the Yukawa matrices usually associated with U(2)
theories of flavor. Mass and mixing angle relations that follow from the simple
form of the quark and charged lepton Yukawa textures are therefore common to
both theories. We show that the differing representation structure of our
horizontal symmetry allows for new solutions to the solar and atmospheric
neutrino problems that do not involve modification of the original charged
fermion Yukawa textures, or the introduction of sterile neutrinos.Comment: 12 pages RevTeX, 1 eps figure. A few typos correcte
Gluon Saturation Effects in Relativistic U+U Collisions
We examine entropy production in relativistic U+U collisions on the basis of
a Color Glass Condensate (CGC) type picture as implemented in the
Kharzeev-Levin-Nardi model (KLN). In this framework, we find that the peak
entropy density produced in tip-on-tip U+U collisions is about 30% greater than
that seen in central Au+Au collisions. Although the resulting difference in the
produced charged particle multiplicity between tip-on-tip and side-on-side
collisions is smaller than that predicted by previous Glauber model estimates,
it is still large enough to allow for experimental discrimination between
average orientations of the uranium nuclei. We also point out that in the
saturation/CGC approach the collision geometry plays a more important role than
previously believed, and that the observed centrality dependence of the
produced particle multiplicity per participant in Au+Au collisions can be
qualitatively reproduced even without running coupling effects.Comment: 7 pages, including 8 figure
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