National Academy of Sciences of the Republic of Kyrgyzstan

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20002025

most citedThick brane solutions

225 citations

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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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gr-qc2025

Rotating wormholes in Einstein-Dirac-Maxwell theory

Vladimir Dzhunushaliev, Vladimir Folomeev

We consider rotating wormhole solutions in general relativity supported by a complex non-phantom spinor field (which provides a nontrivial spacetime topology) and electromagnetic f…

gr-qc2025★ 2 cited

Dirac stars with wormhole topology

Vladimir Dzhunushaliev, Vladimir Folomeev, Sayabek Sakhiyev

We consider configurations consisting of a gravitating nonlinear spinor field and a massless ghost scalar field providing a nontrivial spacetime topology. For such a mixed system,…

gr-qc2023★ 4 cited

Spinor domain wall and test fermions on an arbitrary domain wall

Vladimir Dzhunushaliev, Vladimir Folomeev, Dina Zholdakhmet

We consider a spinor domain wall embedded in a five-dimensional spacetime with a nondiagonal metric. The corresponding plane symmetric solutions for linear and nonlinear spinor fie…

gr-qc2022★ 8 cited

Mixed neutron-star-plus-wormhole systems: Rotating configurations

Vladimir Dzhunushaliev, Vladimir Folomeev, Burkhard Kleihaus +1

We present rapidly rotating neutron stars featuring wormholes in their centers. They arise in general relativity in the presence of a ghost scalar field. The nuclear matter is desc…

gr-qc2022★ 3 cited

Rapidly rotating Dirac stars

Vladimir Dzhunushaliev, Vladimir Folomeev, Nassurlla Burtebayev

Within general relativity, we construct sequences of rapidly rotating Dirac stars consisting of a spinor fluid described by an effective equation of state. We find the physically r…

gr-qc2021★ 14 cited

Axially symmetric Proca-Higgs boson stars

Vladimir Dzhunushaliev, Vladimir Folomeev

We consider strongly gravitating configurations consisting of coupled real Higgs scalar field and vector (Proca) field of mass $μ_{P}$ . For such a system, we find static regular axia…

gr-qc2021★ 1 cited

Static and collapsing configurations supported by the spinor fluid

Vladimir Dzhunushaliev, Vladimir Folomeev

We study a gravitating spherically symmetric nonrelativistic configuration consisting of a spinor fluid whose effective equation of state is derived from a consideration of a limit…

gr-qc2021★ 4 cited

Masking singularities in Weyl gravity and Ricci flows

Vladimir Dzhunushaliev, Vladimir Folomeev

Within vacuum Weyl gravity, we obtain a solution by which, using different choices of the conformal factor, we derive metrics describing (i)~a bounce of the universe; (ii)~toroidal…

gr-qc2020★ 3 cited

On the linear stability of polytropic fluid spheres in $R^{2}$ gravity

Vladimir Dzhunushaliev, Vladimir Folomeev

Within $R^{2}$ gravity, we study the linear stability of strongly gravitating spherically symmetric configurations supported by a polytropic fluid. All calculations are carried out i…

gr-qc2020

Model of a spin- $1/2$ electric charge in $F (B^{2})$ modified Weyl gravity

Vladimir Dzhunushaliev, Vladimir Folomeev

Within $F (B^{2})$ modified Weyl gravity, we consider a model of a spin- $1/2$ electric charge consisting of interior and exterior regions. The interior region is determine…

gr-qc2020★ 3 cited

Spinor field solutions in $F (B^{2})$ modified Weyl gravity

Vladimir Dzhunushaliev, Vladimir Folomeev

We consider modified Weyl gravity where a Dirac spinor field is nonminimally coupled to gravity. It is assumed that such modified gravity is some approximation for the description…

gr-qc2019★ 25 cited

Dirac star with SU(2) Yang-Mills and Proca fields

Vladimir Dzhunushaliev, Vladimir Folomeev

We study spherically symmetric strongly gravitating configurations supported by nonlinear spinor fields and non-Abelian SU(2) Yang-Mills/Proca magnetic fields. Regular asymptotical…

gr-qc2019★ 9 cited

Thick branes in higher-dimensional $f (R)$ gravity

Vladimir Dzhunushaliev, Vladimir Folomeev, Galia Nurtaeva +1

We study the thick brane model within $f (R) \sim R^{n}$ modified gravity in $D$ -dimensional spacetimes with $D \geq 6$ . The system under consideration consists of two branes orthogonal…

gr-qc2019

Energy conditions for a $T^{2}$ wormhole at the center

Vladimir Dzhunushaliev, Vladimir Folomeev, Burkhard Kleihaus +1

Within general relativity, we determine the energy conditions needed for the existence of a toroidal $T^{2}$ wormhole. For this purpose, we employ the conditions of the positiveness…

gr-qc2019★ 6 cited

Thin-shell toroidal wormhole

Vladimir Dzhunushaliev, Vladimir Folomeev, Burkhard Kleihaus +1

We consider a topologically nontrivial thin-shell wormhole with a throat in the form of a $T^{2}$ torus. It is shown that: (i)~such a wormhole is stable with respect to excitations o…

gr-qc2019★ 36 cited

Dirac star in the presence of Maxwell and Proca fields

Vladimir Dzhunushaliev, Vladimir Folomeev

We consider configurations consisting of a gravitating nonlinear spinor field $ψ$ , with a nonlinearity of the type $λ (ψ ˉ ψ)^{2}$ , minimally coupled to Maxwell and Proca…

gr-qc2018★ 33 cited

Dirac stars supported by nonlinear spinor fields

Vladimir Dzhunushaliev, Vladimir Folomeev

We study configurations consisting of a gravitating spinor field $ψ$ with a nonlinearity of the type $λ (ψ ˉ ψ)^{2}$ . To ensure spherical symmetry of the configurations, w…

gr-qc2018★ 1 cited

The motion of color-charged particles as a means of testing the non-Abelian dark matter model

V. Dzhunushaliev, V. Folomeev, N. Protsenko

A possibility is discussed for experimental testing of the dark matter model supported by a classic non-Abelian SU(3) gauge (Yang-Mills) field. Our approach is based on the analysi…

gr-qc2018★ 58 cited

Anisotropic neutron stars in $R^{2}$ gravity

Vladimir Folomeev

We consider static neutron stars within the framework of $R^{2}$ gravity. The neutron fluid is described by three different types of realistic equations of state (soft, moderately st…

gr-qc2017

Dispersion relations for gravitational waves in different models of dark energy

Vladimir Dzhunushaliev, Vladimir Folomeev, Burkhard Kleihau +1

The propagation of weak gravitational waves on the background of dark energy is studied. The consideration is carried out within the framework of an approximate approach where the…

gr-qc2016★ 5 cited

Dipole magnetic field of neutron stars in $f (R)$ gravity

Elizat Bakirova, Vladimir Folomeev

The structure of an interior dipole magnetic field of neutron stars in $f (R)$ gravity is considered. For this purpose, the perturbative approaches are used when both the deviations…

gr-qc2016★ 20 cited

Can mixed star-plus-wormhole systems mimic black holes?

Vladimir Dzhunushaliev, Vladimir Folomeev, Burkhard Kleihaus +1

We consider mixed strongly gravitating configurations consisting of a wormhole threaded by two types of ordinary matter. For such systems, the possibility of obtaining static spher…

gr-qc2015★ 11 cited

Star-plus-wormhole systems with two interacting scalar fields

Vladimir Dzhunushaliev, Vladimir Folomeev, Ajnur Urazalina

We study static, spherically symmetric mixed configurations with a nontrivial (wormhole) spacetime topology provided by the presence of two interacting ghost scalar fields. Wormhol…

gr-qc2015★ 29 cited

Magnetic fields in anisotropic relativistic stars

Vladimir Folomeev, Vladimir Dzhunushaliev

Relativistic, spherically symmetric configurations consisting of a gravitating magnetized anisotropic fluid are studied. For such configurations, we obtain static equilibrium solut…

Rotating wormholes in Einstein-Dirac-Maxwell theory

Dirac stars with wormhole topology

Spinor domain wall and test fermions on an arbitrary domain wall

Mixed neutron-star-plus-wormhole systems: Rotating configurations

Rapidly rotating Dirac stars

Axially symmetric Proca-Higgs boson stars

Static and collapsing configurations supported by the spinor fluid

Masking singularities in Weyl gravity and Ricci flows

On the linear stability of polytropic fluid spheres in R2 gravity

Model of a spin-1/2 electric charge in F(B2) modified Weyl gravity

Spinor field solutions in F(B2) modified Weyl gravity

Dirac star with SU(2) Yang-Mills and Proca fields

Thick branes in higher-dimensional f(R) gravity

Energy conditions for a T2 wormhole at the center

Thin-shell toroidal wormhole

Dirac star in the presence of Maxwell and Proca fields

Dirac stars supported by nonlinear spinor fields

The motion of color-charged particles as a means of testing the non-Abelian dark matter model

Anisotropic neutron stars in R2 gravity

Dispersion relations for gravitational waves in different models of dark energy

Dipole magnetic field of neutron stars in f(R) gravity

Can mixed star-plus-wormhole systems mimic black holes?

Star-plus-wormhole systems with two interacting scalar fields

Magnetic fields in anisotropic relativistic stars

On the linear stability of polytropic fluid spheres in $R^{2}$ gravity

Model of a spin- $1/2$ electric charge in $F (B^{2})$ modified Weyl gravity

Spinor field solutions in $F (B^{2})$ modified Weyl gravity

Thick branes in higher-dimensional $f (R)$ gravity

Energy conditions for a $T^{2}$ wormhole at the center

Anisotropic neutron stars in $R^{2}$ gravity

Dipole magnetic field of neutron stars in $f (R)$ gravity