Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Michael Plum"'
Autor:
Ramakrishna Venkitakrishnan, Yannick Augenstein, Benedikt Zerulla, Fatima Z Goffi, Michael Plum, Carsten Rockstuhl
Publikováno v:
New Journal of Physics, Vol 25, Iss 12, p 123014 (2023)
When light interacts with a material made from subwavelength periodically arranged constituents, non-local effects can emerge. They occur because of either a complicated response of the constituents or possible lattice interactions. In lowest-order a
Externí odkaz:
https://doaj.org/article/f9e0d278a5ca4505a60aae6ee5ac658a
Autor:
Sarah Cousineau, Abdurahim Rakhman, Martin Kay, Alexander Aleksandrov, Viatcheslav Danilov, Timofey Gorlov, Yun Liu, Cary Long, Alexander Menshov, Michael Plum, Andrei Shishlo, Andrew Webster, David Johnson
Publikováno v:
Physical Review Accelerators and Beams, Vol 20, Iss 12, p 120402 (2017)
Laser-assisted stripping is a novel approach to H^{-} charge exchange that overcomes long-standing limitations associated with the traditional, foil-based method of producing high-intensity, time-structured beams of protons. This paper reports on the
Externí odkaz:
https://doaj.org/article/6a2e70efdb304558b87676e3a97c279c
Autor:
Michael Plum, Wolfgang Reichel
Publikováno v:
Journal of Elliptic and Parabolic Equations
We consider localized solutions of variants of the semilinear curl-curl wave equation $$s(x) \partial _t^2 U +\nabla \times \nabla \times U + q(x) U \pm V(x) \vert U \vert ^{p-1} U = 0$$ s ( x ) ∂ t 2 U + ∇ × ∇ × U + q ( x ) U ± V ( x ) | U
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76c54ab4cba55bdc97df397838d27bf4
https://doi.org/10.1007/s41808-023-00215-x
https://doi.org/10.1007/s41808-023-00215-x
Publikováno v:
Numerical Functional Analysis and Optimization. 43:322-349
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8eca3469cc90466ad62c30434f62ab9
https://doi.org/10.1080/01630563.2022.2029485
https://doi.org/10.1080/01630563.2022.2029485
Publikováno v:
Journal of the London Mathematical Society. 102:773-795
This paper considers the propagation of TE‐modes in photonic crystal waveguides. The waveguide is created by introducing a linear defect into a periodic background medium. Both the periodic background problem and the perturbed problem are modelled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6f1490b91294cc8144cb733965ac2f1a
https://doi.org/10.1112/jlms.12337
https://doi.org/10.1112/jlms.12337
Autor:
Michael Plum, Jonathan Wunderlich
Publikováno v:
Acta Cybernetica. 24:373-391
Motivated by the three-dimensional time-dependent Schrödinger-Poisson system we prove the existence of non-trivial solutions of the one-dimensional stationary Schrödinger-Poisson system using computer-assisted methods. Starting from a numerical app
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59146cb29aa8803ded2599e750f92779
https://doi.org/10.14232/actacyb.24.3.2020.6
https://doi.org/10.14232/actacyb.24.3.2020.6
Publikováno v:
Journal of Differential Equations. 268:80-114
We consider the fourth-order wave equation φ t t + φ x x x x + f ( φ ) = 0 , ( x , t ) ∈ R × R , with a nonlinearity f vanishing at 0. Travelling waves φ ( x , t ) = u ( x − c t ) satisfy the ODE u ⁗ + c 2 u ″ + f ( u ) = 0 on R , and fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::523c9870b8039a45a7b3629b4fe27f33
https://doi.org/10.1016/j.jde.2019.08.008
https://doi.org/10.1016/j.jde.2019.08.008
Publikováno v:
Advances in Nonlinear Analysis, 11 (1), 268-284
Advances in Nonlinear Analysis, Vol 11, Iss 1, Pp 268-284 (2021)
Advances in Nonlinear Analysis, Vol 11, Iss 1, Pp 268-284 (2021)
In this paper we provide a numerical approximation of bifurcation branches from nodal radial solutions of the Lane Emden Dirichlet problem in the unit ball in ℝ2, as the exponent of the nonlinearity varies. We consider solutions with two or three n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8a25460d5897ee7f43def8f7710cc2d
https://publikationen.bibliothek.kit.edu/1000137043/126281375
https://publikationen.bibliothek.kit.edu/1000137043/126281375
Autor:
Carsten Rockstuhl, Ramakrishna Venkitakrishnan, Taavi Repän, Timon Höß, Fatima Z. Goffi, Michael Plum
Publikováno v:
Physical Review B, 103 (19), 195425
Nonlocal constitutive relations promise to homogenize metamaterials even though the ratio of period over operational wavelength is not much smaller than unity. However, this ability has not yet been verified, as frequently only discrete structures we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47012b3189a82356fd8167b88fb8e636
Autor:
Andrii Khrabustovskyi, Michael Plum
Let $\varepsilon>0$ be a small parameter. We consider the domain $\Omega_\varepsilon:=\Omega\setminus D_\varepsilon$, where $\Omega$ is an open domain in $\mathbb{R}^n$, and $D_\varepsilon$ is a family of small balls of the radius $d_\varepsilon=o(\v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1c701ee93ff4243cbf78efb890b5d68