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41 papers · 1 filter
Critical Transitions in D-Concave Nonautonomous Scalar Ordinary Differential Equations Appearing in Population Dynamics
Jesús Dueñas, Carmen Núñez, Rafael Obaya
A function with finite asymptotic limits gives rise to a transition equation between a "past system" and a "future system". This question is analyzed in the case of nonautonomous c…
Laboratory rotational spectroscopy and astronomical search of ethynyl substituted naphthalene
Carlos Cabezas, Isabel Peña, José Cernicharo
The recent interstellar detection of cyanonaphthalenes bring interest in related aromatic molecular species that could be present in similar astronomical environments. In this cont…
The role of charge relaxation in electrified tip streaming
M. Rubio, P. Rodríguez-Díaz, J. M. López-Herrera +3
We study experimentally and numerically the onset of tip streaming in an electrified droplet. The experiments show that, for a sufficiently small dimensionless conductivity, the dr…
Casimir self-energy of a δ-δ' sphere
C. Romaniega, J. M. Munoz-Castaneda, I. Cavero-Pelaez
We extend previous work on the vacuum energy of a massless scalar field in the presence of singular potentials. We consider a single sphere denoted by the so-called "delta-delta pr…
Casimir energy for spinor fields with -shell potentials
Guglielmo Fucci, César Romaniega Sancho
This work analyzes the Casimir energy of a massive spinor field propagating in flat space endowed with a spherically symmetric -function potential. By utilizing the spectral zet…
On generalized definitions of ultradifferentiable classes
Javier Jiménez-Garrido, David Nicolas Nenning, Gerhard Schindl
We show that the ultradifferentiable-like classes of smooth functions introduced and studied by S. Pilipović, N. Teofanov and F. Tomić are special cases of the general framework of…