Zobrazeno 1 - 10
of 4 860
pro vyhledávání: '"P Heilmann"'
Autor:
Cicalese, Marco, Heilmann, Tim
We investigate the influence of surfactants on stabilizing the formation of interfaces in non-local anisotropic two-phase fluid at equilibrium. The analysis focuses on singularly perturbed non-local van der Waals-Cahn-Hillard-type energies, supplemen
Externí odkaz:
http://arxiv.org/abs/2410.01477
X-ray diffraction gratings play an essential role in high-resolution spectroscopy of astrophysical phenomena. We present some scientific highlights from the X-ray grating spectrometers (XGS) on board of the Chandra and XMM/Newton missions, XGS optica
Externí odkaz:
http://arxiv.org/abs/2409.02297
High-resolution spectroscopy in soft X-rays ($<2$ keV) requires diffractive elements to resolve any astrophysically relevant diagnostics, such as closely spaced lines, weak absorption lines, or line profiles. The Rowland torus geometry describes how
Externí odkaz:
http://arxiv.org/abs/2408.10702
In this paper we present commutativity results for a general class of Szasz-Mirakjan-Durrmeyer type operators and associated differential operators and investigate their eigenfunctions.
Externí odkaz:
http://arxiv.org/abs/2407.21722
In this paper we introduce a general family of Sz\'asz--Mirakjan--Durrmeyer type operators depending on an integer parameter $j \in \mathbb{Z}$. They can be viewed as a generalization of the Sz\'asz--Mirakjan--Durrmeyer operators [9], Phillips operat
Externí odkaz:
http://arxiv.org/abs/2407.16474
Photonic modes exhibiting a polarization winding akin to a vortex possess an integer topological charge. Lasing with topological charge 1 or 2 can be realized in periodic lattices of up to six-fold rotational symmetry. Higher order charges require sy
Externí odkaz:
http://arxiv.org/abs/2405.19980
Autor:
Heilmann, Ralf K., Bruccoleri, Alexander R., Gregory, James A., Gullikson, Eric M., Günther, Hans Moritz, Hertz, Edward, Lambert, Renee D., Young, Douglas J., Schattenburg, Mark L.
The Arcus Probe mission concept has been submitted as an Astrophysics Probe Explorer candidate. It features two co-aligned high-resolution grating spectrometers: one for the soft x-ray band and one for the far UV. Together, these instruments can prov
Externí odkaz:
http://arxiv.org/abs/2405.15977
Publikováno v:
Phys. Rev. B 110, 115420 (2024)
We examine 2D electron transport through a long narrow channel driven by an external electric field in presence of diffusive boundary scattering. At zero temperature, we derive an analytical solution of the transition from ballistic to diffusive tran
Externí odkaz:
http://arxiv.org/abs/2404.11353
In this paper we propose a notion of $s$-fractional mass for $1$-currents in $\R^d$. Such a notion generalizes the notion of $s$-fractional perimeters for sets in the plane to higher codimension one-dimensional singularities. Remarkably, the limit as
Externí odkaz:
http://arxiv.org/abs/2403.03901
Autor:
Cicalese, Marco, Heilmann, Tim
We investigate the influence of surfactants on stabilizing the formation of interfaces in solid-solid phase transitions. The analysis focuses on singularly perturbed van der Waals-Cahn-Hillard-type energies for gradient vector fields, supplemented wi
Externí odkaz:
http://arxiv.org/abs/2401.03840