Zobrazeno 1 - 10
of 663
pro vyhledávání: '"E. Radu"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 1, Pp 1-36 (2024)
Abstract We construct a new family of rotating black holes with scalar hair and a regular horizon of spherical topology, within five dimensional (d = 5) Einstein’s gravity minimally coupled to a complex, massive scalar field doublet. These solution
Externí odkaz:
https://doaj.org/article/eaa0b1c3338143afa5b8b5961d5e9faf
Publikováno v:
Physics Letters B, Vol 852, Iss , Pp 138595- (2024)
Spherical Proca Stars (PSs) are regarded as the ground state amongst the family of PSs. In accordance, spherical PSs are thought to have a fundamental branch of stable solutions. In this Letter, we provide energetic, morphological and dynamical evide
Externí odkaz:
https://doaj.org/article/eb0fe20fd08543af94a4ec6b94ce5c5b
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 10, Pp 1-30 (2022)
Abstract A mechanism for circumventing the Mayo-Bekenstein no-hair theorem allows endowing four dimensional (D = 4) asymptotically flat, spherical, electro-vacuum black holes with a minimally coupled U (1)-gauged scalar field profile: Q-hair. The sca
Externí odkaz:
https://doaj.org/article/c3f66866da59416e93e3bc226789e44b
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 82, Iss 6, Pp 1-15 (2022)
Abstract We present a discussion of the traversable wormholes in Einstein–Dirac–Maxwell theory recently reported in e-Print: 2010.07317. This includes a detailed description of the ansatz and junction condition, together with an investigation of
Externí odkaz:
https://doaj.org/article/f77fe124141c404ca768c4ab21925bdb
Publikováno v:
Physics Letters B, Vol 824, Iss , Pp 136811- (2022)
Scalar boson stars and Dirac stars are solitonic solutions of the Einstein–Klein-Gordon and Einstein-Dirac classical equations, respectively. Despite the different bosonic vs. fermionic nature of the matter field, these solutions to the classical f
Externí odkaz:
https://doaj.org/article/c5534b6a17c84ff3b85175a531f2d3f7
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-27 (2019)
Abstract Spherical black hole (BH) solutions in Einstein-Maxwell-scalar (EMS) models wherein the scalar field is non-minimally coupled to the Maxwell invariant by some coupling function are discussed. We suggest a classification for these models into
Externí odkaz:
https://doaj.org/article/90dabd366d2f4b6c872d01541f9717e2
Gravitating solitons and black holes with synchronised hair in the four dimensional O(3) sigma-model
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 2, Pp 1-25 (2019)
Abstract We consider the 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 space-time dimensions. We show that this simple, geometrically motivated model, adm
Externí odkaz:
https://doaj.org/article/5339a687115f4350b925791a78a9be62
Publikováno v:
Physics Letters B, Vol 812, Iss , Pp 136027- (2021)
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:
https://doaj.org/article/89e75c5f5fc44cdf9a6f02e18b7597f8
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 10, Pp 1-21 (2018)
Abstract 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 synch
Externí odkaz:
https://doaj.org/article/9b00968ad0b64bc1a43a867545ff7f61
Publikováno v:
Physics Letters B, Vol 797, Iss , Pp - (2019)
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:
https://doaj.org/article/59f09675c98d409e8a9929bb88b54b0f