Results 61 to 70 of about 129,718 (286)

Gauge conditions for binary black hole puncture data based on an approximate helical Killing vector

, 2003
We show that puncture data for quasicircular binary black hole orbits allow a special gauge choice that realizes some of the necessary conditions for the existence of an approximate helical Killing vector field.
A. Ashtekar, A. Komar, B. Brügmann, B. Schutz, Bernd Brügmann, E. Gourgoulhon, F. Estabrook, G.B. Cook, G.B. Cook, G.B. Cook, H.P. Pfeiffer, J. Baker, J. Baker, J. Baker, J. Baker, J.R. Wilson, J.W. York, J.W. York, M. Alcubierre, M. Alcubierre, M. Alcubierre, M. Shibata, M. Skoge, P. Grandclement, Pablo Laguna, S. Brandt, T.W. Baumgarte, T.W. Baumgarte, W. Tichy, Wolfgang Tichy   +29 more
core   +1 more source

Killing Vector Fields of Generic Semi-Riemannian Metrics

Milan Journal of Mathematics, 2014
Let M be a smooth oriented connected n-dimensional manifold and let M be the space of pseudo-Riemannian metrics on M of a given signature (n+,n−),n++n−=n>1. A system of n metric invariants is attached to each metric in M, called the Ricci invariants, and by using the geometric properties of such invariants, the following result is proved: The subset O ...
Rosado María, María Eugenia, Castrillón López, M., Muñoz Masqué, Jaime   +2 more
openaire   +3 more sources

CORE: Cholesterol Altered Lipid Nanoparticles for Splenic Expression of mRNA Payloads

Advanced Healthcare Materials, EarlyView.
In this paper researchers introduce CORE LNPs, a new class of lipid nanoparticles engineered to redirect mRNA expression away from the liver and into the spleen, a key immune organ. By combining chemical design with computational tools, they created cholesterol analogs that enable precise spleen‐targeted expression, providing greater applications for ...
Eshan A. Narasipura, Vincent Fung, Rachel VanKeulen‐Miller, Palas B. Tiwade, Owen S. Fenton   +4 more
wiley   +1 more source

Ricci Solitons and Generalized Ricci Solitons Whose Potential Vector Fields Are Jacobi-Type

Journal of Mathematics
This paper is devoted to Ricci solitons admitting a Jacobi-type vector field. First, we present some rigidity results for Ricci solitons Mn,g,V,λ admitting a Jacobi-type vector field ξ and provide conditions under which ξ is Killing.
Vahid Pirhadi, Ghodratallah Fasihi-Ramandi, Shahroud Azami   +2 more
doaj   +1 more source

Quadratic Killing tensors on symmetric spaces which are not generated by Killing vector fields

Comptes Rendus. Mathématique
Every Killing tensor field on the space of constant curvature and on the complex projective space can be decomposed into the sum of symmetric tensor products of Killing vector fields (equivalently, every polynomial in velocities integral of the geodesic ...
Matveev, Vladimir S., Nikolayevsky, Yuri
doaj   +1 more source

Symmetries of supergravity backgrounds and supersymmetric field theory

Journal of High Energy Physics, 2020
In four spacetime dimensions, all N $$ \mathcal{N} $$ = 1 supergravity-matter systems can be formulated in the so-called U(1) superspace proposed by Howe in 1981.
Sergei M. Kuzenko, Emmanouil S.N. Raptakis   +1 more
doaj   +1 more source

Killing Symmetries in $\mathcal{H}$-Spaces with $\Lambda$

, 2013
All Killing symmetries in complex $\mathcal{H}$-spaces with $\Lambda$ in terms of the Pleba\'nski - Robinson - Finley coordinate system are found. All $\mathcal{H}$-metrics with $\Lambda$ admitting a null Killing vector are explicitly given.
Chudecki, Adam, Przanowski, Maciej
core   +1 more source

Generalizations of Killing vector fields in sol space [PDF]

Filomat, 2019
We consider two generalizations of the Killing vector fields in the 3D Sol space. Conformal Killing vector fields are the first generalization, 2-Killing vector fields are the second. We characterize proper conformal Killing vector fields and determine some proper 2-Killing vector fields in Sol space.
openaire   +5 more sources

Bacteria‐Responsive Nanostructured Drug Delivery Systems for Targeted Antimicrobial Therapy

Advanced Materials, EarlyView.
Bacteria‐responsive nanocarriers are designed to release antimicrobials only in the presence of infection‐specific cues. This selective activation ensures drug release precisely at the site of infection, avoiding premature or indiscriminate release, and enhancing efficacy.
Guillermo Landa, Gracia Mendoza, Silvia Irusta, Manuel Arruebo   +3 more
wiley   +1 more source

CARTAN GEOMETRIES ON COMPLEX MANIFOLDS OF ALGEBRAIC DIMENSION ZERO [PDF]

Épijournal de Géométrie Algébrique, 2019
We show that compact complex manifolds of algebraic dimension zero bearing a holomorphic Cartan geometry of algebraic type have infinite fundamental group.
Indranil Biswas, Sorin Dumitrescu, Benjamin McKay   +2 more
doaj   +1 more source