J. Arroyo

Evolution of chirality from transverse wobbling in $^{135}$Pr

N. Sensharma, U. Garg, Q. B. Chen, S. G. Frauendorf et autres

Chirality is a distinct signature that characterizes triaxial shapes in nuclei. We report the first observation of chirality in the nucleus $^{135}$Pr using a high-statistics Gammasphere experiment with the $^{123}$Sb($^{16}$O,4n)$^{135}$Pr reaction. Two chiral-partner bands with the configuration $π(1h_{11/2})^1\otimesν(1h_{11/2})^{-2}$ have been identified in …

Boundary Value Problems for Euler-Bernoulli Planar Elastica. A Solution Construction Procedure

J. Arroyo, Óscar J. Garay, Álvaro Pámpano

es (code pays fourni par la source)

Delaunay surfaces in S3(ρ)

J. Arroyo, Óscar J. Garay, Álvaro Pámpano

Recently, invariant constant mean curvature (CMC) surfaces in real space forms have been characterized locally by using extremal curves of a Blaschke type energy functional [5]. Here, we use this characterization to offer a new approach to some global results for CMC …

es (code pays fourni par la source)

Constant mean curvature invariant surfaces and extremals of curvature energies

J. Arroyo, Óscar J. Garay, Álvaro Pámpano

We determine the extremal curves of curvature energy functionals which generalize a variational problem studied by Blaschke in R 3 . The generalization is made by extending both, the lagrangian energy itself, and the ambient space (to riemannian and lorentzian 3-space forms). …

es (code pays fourni par la source)

Quadratic Gradient Descent Methods and Transversality Conditions

J. Arroyo, Óscar J. Garay, José J. Mencía

Different gradient descent methods have been introduced in [1] to study a quite general family of variational problems under affine and isoperimetric constraints. Thus, in [1] gradient descent sequences are created by using linear, quadratic or cubic approximations to the gradient descent …

Binormal Motion of Curves with Constant Torsion in 3-Spaces

J. Arroyo, Óscar J. Garay, Álvaro Pámpano

We study curve motion by the binormal flow with curvature and torsion depending velocity and sweeping out immersed surfaces. Using the Gauss-Codazzi equations, we obtain filaments evolving with constant torsion which arise from extremal curves of curvature energy functionals. They are “soliton” …

es (code pays fourni par la source)

A NOTE ON CLOSED HYPERELASTICAE IN S3 BY

J. Arroyo, Óscar J. Garay

Abstract. Curves in S3(1) which are critical points of energy functionals of the type γ κr, κ being the curvature of γ, are known as hyperelastic curves or, more precisely, r-elasticae. In general, for a given r complete determination of r-elasticae is …

Curvature-dependent energies minimizers and visual curve completion

J. Arroyo, Óscar J. Garay, Álvaro Pámpano

es (code pays fourni par la source)

Elastic curves with constant curvature at rest in the hyperbolic plane

J. Arroyo, Óscar J. Garay, José J. Mencía

es (code pays fourni par la source)

Stability of Non Liquid Bridges

J. Arroyo, Miyuki Koiso, Bennett Palmer

Analysis of electric grid interdiction with line switching

A. Delgadillo, J. Arroyo, Natalia Alguacil

This paper addresses the vulnerability analysis of the electric grid under terrorist threat. This problem is formulated as a mixed-integer non-linear bilevel program. In the upper-level optimization, the terrorist agent maximizes the damage caused in the power system, which is measured in …

es (code pays fourni par la source)

QUADRATIC CURVATURE ENERGIES IN THE 2-SPHERE

J. Arroyo, Óscar J. Garay, José J. Mencía

Abstract The classical variational analysis of curvature energy functionals, acting on spaces of curves of a Riemannian manifold, is extremely complicated, and the procedure usually can not be completely developed under such a degree of generality. Sometimes this difficulty may be overcome …

es (code pays fourni par la source)