Zobrazeno 1 - 10
of 467
pro vyhledávání: '"Gorbar, E. V."'
Theoretical analysis of the interaction between superfluid dark matter and rotating supermassive black holes offers a promising framework for probing quantum effects in ultralight dark matter and its role in galactic structure. We study how black hol
Externí odkaz:
http://arxiv.org/abs/2409.20236
Autor:
Gorkavenko, V. M., Barabash, O. V., Gorkavenko, T. V., Teslyk, O. M., Zaporozhchenko, A. O., Jia, Junji, Yakimenko, A. I., Gorbar, E. V.
Publikováno v:
Class. Quantum Grav. 41, 235013 (2024)
Dynamical friction and stellar orbital motion in spiral galaxies with dark matter composed of ultralight bosons in the state of rotating Bose-Einstein condensate (BEC) are studied. It is found that the dynamical friction force is significantly affect
Externí odkaz:
http://arxiv.org/abs/2408.00104
Publikováno v:
Entropy 2023, 25(9), 1317
The formalism of reduced quantum electrodynamics is generalized to the case of heterostructures composed of few atomically thick layers and the corresponding effective (2+1)-dimensional gauge theory is formulated. This dimensionally reduced theory de
Externí odkaz:
http://arxiv.org/abs/2406.00739
Publikováno v:
Phys. Rev. B 110, 035133 (2024)
We study viscoelastic response in Weyl semimetals with broken time-reversal symmetry. The principal finding is that topology and anisotropy of the Fermi surface are manifested in the viscoelasticity tensor of the electron fluid. In the dynamic (inter
Externí odkaz:
http://arxiv.org/abs/2402.19304
Publikováno v:
Phys. Rev. B 109, 165145 (2024)
In gapped bilayer graphene, similarly to conventional semiconductors, Coulomb impurities (such as nitrogen donors) may determine the activation energy of its conductivity and provide low temperature hopping conductivity. However, in spite of the impo
Externí odkaz:
http://arxiv.org/abs/2401.09389
We study chirality production in the pseudoscalar inflation model of magnetogenesis taking into account the Schwinger effect and particle collisions in plasma in the relaxation time approximation. We consider the Schwinger production of one Dirac fer
Externí odkaz:
http://arxiv.org/abs/2311.07429
The generation of magnetic fields during inflation in an electromagnetic model with a non-local form factor in Maxwell`s action is studied. The equations of motion for the electromagnetic field are derived and solved. It is found that the conformal s
Externí odkaz:
http://arxiv.org/abs/2310.01241
Publikováno v:
Phys. Rev. B 108, 075167 (2023)
We calculate optical conductivity for bilayer dice lattices in commensurate vertically aligned stackings. The interband optical conductivity reveals a rich activation behavior unique for each of the four stackings. We found that the intermediate ener
Externí odkaz:
http://arxiv.org/abs/2303.08258
Publikováno v:
Phys. Rev. B 108, 075166 (2023)
We introduce and classify nonequivalent commensurate stackings for bilayer dice or $\mathcal{T}_3$ lattice. For each of the four stackings with vertical alignment of sites in two layers, a tight-binding model and an effective model describing the pro
Externí odkaz:
http://arxiv.org/abs/2303.01452
The nature of dark matter (DM) remains one of the unsolved mysteries of modern physics. An intriguing possibility is to assume that DM consists of ultralight bosonic particles in the Bose-Einstein condensate (BEC) state. We study stationary DM struct
Externí odkaz:
http://arxiv.org/abs/2301.13110