Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Perapechka, I."'
Publikováno v:
Phys. Rev. D 103, 065009 (2021)
We study axially symmetric multi-soliton solutions of a complex scalar field theory with a sextic potential, minimally coupled to Einstein's gravity. These solutions carry no angular momentum and can be classified by the number of nodes of the scalar
Externí odkaz:
http://arxiv.org/abs/2101.06442
Boson stars are often described as macroscopic Bose-Einstein condensates. By accommodating large numbers of bosons in the same quantum state, they materialize macroscopically the intangible probability density cloud of a single particle in the quantu
Externí odkaz:
http://arxiv.org/abs/2008.10608
Publikováno v:
Phys. Rev. D 100, 105003 (2019)
We study fermion modes localized on the kink in the 1+1 dimensional $\phi^4$ model, coupled to the Dirac fermions with backreaction. Using numerical methods we construct self-consistent solutions of the corresponding system of coupled integral-differ
Externí odkaz:
http://arxiv.org/abs/1909.12736
Einstein's gravity minimally coupled to free, massive, classical fundamental fields admits particle-like solutions. These are asymptotically flat, everywhere non-singular configurations that realise Wheeler's concept of a geon: a localised lump of se
Externí odkaz:
http://arxiv.org/abs/1906.05386
We study a new family of self-gravitating axially-symmetric, rotating boson stars in the two-component Friedberg-Lee-Sirlin model minimally coupled to Einstein gravity in four spacetime dimensions. In the flat space limit the boson stars tend to the
Externí odkaz:
http://arxiv.org/abs/1904.13379
Publikováno v:
Phys. Rev. D 100, 064032 (2019)
We study Kerr black holes with synchronised non-trivial parity-odd massive scalar hair in four dimensional asymptotically flat space-time. These axially symmetric stationary spinning solutions of the minimally coupled Einstein-Klein-Gordon theory pro
Externí odkaz:
http://arxiv.org/abs/1904.07630
Autor:
Perapechka, I., Shnir, Ya.
Publikováno v:
Phys. Rev. D 99, 125001 (2019)
The index theorem implies that there are fermionic states localized on a soliton. Presence of these modes may significantly alter the pattern of interaction between the solitons. As a particular example we investigate the chiral magnetic Skyrmions co
Externí odkaz:
http://arxiv.org/abs/1901.06925
Gravitating solitons and black holes with synchronised hair in the four dimensional O(3) sigma-model
Publikováno v:
J. High Energ. Phys. (2019) 2019: 111
We consider the $\mathrm{O}(3)$ non-linear sigma-model, composed of three real scalar fields with a standard kinetic term and with a symmetry breaking potential in four spacetime dimensions. We show that this simple, geometrically motivated model, ad
Externí odkaz:
http://arxiv.org/abs/1811.11799
Publikováno v:
J. High Energ. Phys. (2018) 2018: 119
We study solutions of the Einstein-Skyrme model. Firstly we consider test field Skyrmions on the Kerr background. These configurations -- hereafter dubbed Skerrmions -- can be in equilibrium with a Kerr black hole (BH) by virtue of a synchronisation
Externí odkaz:
http://arxiv.org/abs/1808.05388
Publikováno v:
Phys. Rev. D 98, 045018 (2018)
We study non-topological Q-ball solutions of the (3+1)-dimensional Friedberg-Lee-Sirlin two-component model. The limiting case of vanishing potential term yields an example of hairy Q-balls, which possess a long range massless real field. We discuss
Externí odkaz:
http://arxiv.org/abs/1805.11929