Zobrazeno 1 - 10
of 1 229
pro vyhledávání: '"Weigel H"'
Autor:
Takyi, I., Weigel, H.
Publikováno v:
Phys. Rev., D107 (2023) 036003
We compute the vacuum polarization energies (VPE) of solitons in a self-dual impurity model in which the soliton profiles take the shape of a separated kink-antikink pair. Classically the soliton energies are invariant under the change of a continuou
Externí odkaz:
http://arxiv.org/abs/2212.02332
Autor:
Graham, N., Weigel, H.
Publikováno v:
Phys. Rev. D106 (2022) 076013
We consider vortices in scalar electrodynamics and compute the leading quantum correction to their energies for the BPS case of identical classical masses of the Higgs and gauge fields. In particular, we focus on the winding number $n$ dependence of
Externí odkaz:
http://arxiv.org/abs/2207.04960
Autor:
Graham, N., Weigel, H.
Publikováno v:
Int. J. Mod. Phys. A37 (2022) 2241004
We review recent progress in the computation of leading quantum corrections to the energies of classical solitons with topological structure, including multi-soliton models in one space dimension and string configurations in three space dimensions. T
Externí odkaz:
http://arxiv.org/abs/2201.12131
Autor:
Graham, N., Weigel, H.
Publikováno v:
Phys. Rev. D 104, 011901 (2021)
We compute the one-loop vacuum polarization energies of Abrikosov-Nielsen-Olesen (ANO) vortices with topological charge $n$ in scalar electrodynamics, for the BPS case of equal gauge and scalar masses. This calculation allows us to investigate the re
Externí odkaz:
http://arxiv.org/abs/2106.11870
Publikováno v:
Phys. Rev. D102 (2020) 116004
We compute the vacuum polarization energy of kink solitons in the $\phi^{8}$ model in one space and one time dimensions. There are three possible field potentials that have eight powers of $\phi$ and that possess kink solitons. For these different fi
Externí odkaz:
http://arxiv.org/abs/2010.07182
Autor:
Graham, N., Weigel, H.
Publikováno v:
Phys. Rev. D 101, 076006 (2020)
Scattering methods make it possible to compute the effects of renormalized quantum fluctuations on classical field configurations. As a classic example of a topologically nontrivial classical solution, the Abrikosov-Nielsen-Olesen vortex in U(1) Higg
Externí odkaz:
http://arxiv.org/abs/1910.09348
Autor:
Weigel, H.
Publikováno v:
AIP Conference Proceedings 2116, 170002 (2019)
We compute the vacuum polarization energies for a couple of soliton models in one space and one time dimensions. These solitons are mappings that connect different degenerate vacua. From the considered sample solitons we conjecture that the vacuum po
Externí odkaz:
http://arxiv.org/abs/1907.10942
Autor:
Takyi, I., Weigel, H.
Publikováno v:
Eur. J. Phys. A, 55 (2019) 128
We present numerical simulations for unpolarized and polarized structure functions in a chiral soliton model. The soliton is constructed self-consistently from quark fields from which the structure functions are extracted. Central to the project is t
Externí odkaz:
http://arxiv.org/abs/1903.11435
Autor:
Takyi, I., Weigel, H.
We study nucleon structure functions in the soliton picture of the bosonized Nambu-Jona-Lasinio model. We focus on their vacuum contributions and examine whether they are outweighed by their valence quark counterparts.
Comment: 4 pages, contribu
Comment: 4 pages, contribu
Externí odkaz:
http://arxiv.org/abs/1903.10748
Autor:
Weigel, H.
Publikováno v:
MDPI, Universe 4 (2018) 142
We cautiously review the treatment of pentaquark exotic baryons in chiral soliton models. We consider two examples and argue that any consistent and self-contained description must go beyond the mean field approximation that only considers the classi
Externí odkaz:
http://arxiv.org/abs/1811.12128