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Akademický článek
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Autor:
Slobodeanu, Radu, Speight, Martin
A Skyrme type energy functional for maps $\varphi$ from an oriented Riemannian 3-manifold $M$ to a contact 3-manifold $N$ is defined, generalizing the BPS Skyrme energy of Ferreira and Zakrzewski. This energy has a topological lower bound, attained b
Externí odkaz:
http://arxiv.org/abs/2411.09649
The Skyrme model is extended with the Maxwell action and a source term for the gauge field. We consider the specialized case of vanishing isospin states, such that only an electric potential is turned on and study the backreaction onto the Skyrme fie
Externí odkaz:
http://arxiv.org/abs/2410.19618
Autor:
Arif Chasanul Muna
Publikováno v:
Al Quds: Jurnal Studi Alquran dan Hadis, Vol 5, Iss 1, Pp 29-50 (2021)
Form Analysis as a Method of Matn Criticism: Scrutinizing the Accuracy of Robert Marston Speight's Thought (1924-2011) Together with sanad, matn is the main component in a hadith. Among the important discussions regarding matn is the existence of se
Externí odkaz:
https://doaj.org/article/7e5e6f2067a54793a9964cd46a81824a
Autor:
Speight, Martin, Winyard, Thomas
A method is developed to compute minimal energy vortex lattices in a general Ginzburg-Landau model of a superconductor subjected to an applied magnetic field. The model may have any number of components and may be spatially anisotropic. Both the peri
Externí odkaz:
http://arxiv.org/abs/2406.16584
We show that there exists a family of mutually singular doubling measures on Laakso space with respect to which real-valued Lipschitz functions are almost everywhere differentiable. This implies that there exists a measure zero universal differentiab
Externí odkaz:
http://arxiv.org/abs/2406.07660
Autor:
Speight, Sam
We develop realizability models of intensional type theory, based on groupoids, wherein realizers themselves carry non-trivial (non-discrete) homotopical structure. In the spirit of realizability, this is intended to formalize a homotopical BHK inter
Externí odkaz:
http://arxiv.org/abs/2405.19095
Publikováno v:
J. High Energ. Phys. 06, 116 (2024)
We investigate the ground state crystalline structure of nuclear matter in the $\omega$-meson variant of the Skyrme model. After minimizing energy with respect to variations of both the Skyrme field and the period lattice, we find four distinct perio
Externí odkaz:
http://arxiv.org/abs/2404.11287
Akademický článek
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Publikováno v:
Eiszeitalter und Gegenwart, Vol 67, Pp 25-31 (2018)
Externí odkaz:
https://doaj.org/article/99c4c43a711e4c3a8c13445a617b363e