Zobrazeno 1 - 10
of 1 123
pro vyhledávání: '"Dickmann P"'
Motivated by the recent work of Algom-Kfir and Bestinva introducing the mapping class group of an infinite graph via proper homotopy equivalences, we give a necessary and sufficient condition for a surface to be properly homotopy equivalent to a grap
Externí odkaz:
http://arxiv.org/abs/2410.20877
We investigate the mechanical loss characteristics of Eu$^{3+}$:Y$_2$SiO$_5$$\unicode{x2013}$a promising candidate for ultra-low-noise frequency stabilization through the spectral hole burning technique. Three different mechanical oscillators with va
Externí odkaz:
http://arxiv.org/abs/2409.14126
Autor:
Weishaupt, Fabio, Tilly, Julius F., Appenrodt, Nils, Fischer, Pascal, Dickmann, Jürgen, Heberling, Dirk
Automotive self-localization is an essential task for any automated driving function. This means that the vehicle has to reliably know its position and orientation with an accuracy of a few centimeters and degrees, respectively. This paper presents a
Externí odkaz:
http://arxiv.org/abs/2408.05811
Autor:
Dickmann, S., Berezhnoy, P. S.
Publikováno v:
Phys. Rev. B 108, 115313 (2023)
Excitation with a massive spin reversal of the individual skyrmion/antiskyrmion type is theoretically studied in a quantum Hall ferromagnet, where the zero and first Landau levels are completely occupied only by electrons with spins aligned strictly
Externí odkaz:
http://arxiv.org/abs/2311.11418
Publikováno v:
Advances in Radio Science, Vol 22, Pp 29-34 (2024)
The results of immunity tests on components of self-driving automobiles to radiated high power electromagnetic (HPEM) pulses are presented in this work. It is of particular interest to investigate such automobiles' resilience towards deliberate attac
Externí odkaz:
https://doaj.org/article/b85e757448024eabafdd2b139522673f
Autor:
Dickmann, Ryan
We completely classify the orientable infinite-type surfaces $S$ such that $\operatorname{PMap}(S)$, the pure mapping class group, has automatic continuity. This classification includes surfaces with noncompact boundary. In the case of surfaces with
Externí odkaz:
http://arxiv.org/abs/2306.02599
We theoretically investigate the propagation of light in the presence of a homogeneous gravitational field. To model this, we derive the solutions of the wave equation in Rindler spacetime, which account for gravitational redshift and light deflectio
Externí odkaz:
http://arxiv.org/abs/2304.01069
Autor:
Dickmann, Ryan, Domat, George, Hill, Thomas, Kwak, Sanghoon, Ospina, Carlos, Patel, Priyam, Rechkin, Rebecca
Publikováno v:
Math. Res. Lett. 31 (2024), 127-174
In his paper, Thurston shows that a positive real number $h$ is the topological entropy for an ergodic traintrack representative of an outer automorphism of a free group if and only if its expansion constant $\lambda = e^h$ is a weak Perron number. T
Externí odkaz:
http://arxiv.org/abs/2209.15102
Autor:
Vinzenz Janoudi, Pirmin Schoeder, Timo Grebner, Nils Appenrodt, Juergen Dickmann, Christian Waldschmidt
Publikováno v:
IEEE Journal of Microwaves, Vol 4, Iss 3, Pp 329-347 (2024)
A key aspect of the imaging capability of radar systems is the angular resolution, which is determined by the aperture size of the antenna array. Therefore technologies such as MIMO and especially radar networks consisting of multiple independent MIM
Externí odkaz:
https://doaj.org/article/efd0938715d843da8f721d9430538f84
Publikováno v:
Communications Engineering, Vol 3, Iss 1, Pp 1-8 (2024)
Abstract Interferometric sensors, renowned for their exceptional accuracy, leverage the wave properties of coherent electromagnetic radiation. The periodicity of the measurement signal often critically limits the measurement range of sensors utilizin
Externí odkaz:
https://doaj.org/article/e205e9f3d9804c2099539cbfcdb9bdc0