Zobrazeno 1 - 10
of 122
pro vyhledávání: '"E. V. Gorbar"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 83, Iss 5, Pp 1-14 (2023)
Abstract 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 stationar
Externí odkaz:
https://doaj.org/article/b32347e379284261b703e94be474e4b2
Autor:
E. V. Gorbar, Ilya L. Shapiro
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 7, Pp 1-15 (2022)
Abstract Semiclassical loop corrections to the gravitational action include various terms with zero, two, and four derivatives of the metric as well as nonlocal form factors for these terms. Contributions to some of these terms could be confused with
Externí odkaz:
https://doaj.org/article/5544d67682884eb0a7014755f8b0f05e
Publikováno v:
Electronic Journal of Differential Equations, Vol Conference, Iss 04, Pp 87-101 (2000)
The heat-kernel expansion for a nonanalytic function of a differential operator, and the integrated (Cesà ro-smoothed) spectral densities associated with the corresponding nonanalytic function of the spectral parameter, exhibit a certain nonlocal be
Externí odkaz:
https://doaj.org/article/368afab1e44a42aa88e95438556394be
Publikováno v:
Low Temperature Physics. 48:660-666
The p-wave superfluid is characterized by nontrivial topological characteristics essential for fault-tolerant quantum state manipulation. However, the practical realization of the p-wave state remains a challenging problem. We study the s- and p-wave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15caa15cce58f0c116d65d006a0e557d
https://doi.org/10.1063/10.0013278
https://doi.org/10.1063/10.0013278
The electric and chiral current response to the time- and coordinate-dependent pseudoelectric field $\mathbf{E}_5$ in Weyl semimetals is studied. It is found that $\mathbf{E}_5$ leads to an electric current in the direction perpendicular to the field
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a0a77fc684557b8fd16f895258cc792
http://arxiv.org/abs/2205.06293
http://arxiv.org/abs/2205.06293
Autor:
P. O. Sukhachov, E. V. Gorbar
A hydrodynamic flow of electrons driven by an oscillating electric field in Dirac and Weyl semimetals is investigated. It is found that a double-peak profile of the electric current appears and is manifested in a stray magnetic field with peaks in on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::800657d6d18ea1e2969df0484b7676f5
http://arxiv.org/abs/2107.09740
http://arxiv.org/abs/2107.09740
In the framework of Higgs inflation, we consider the electromagnetic field nonminimally coupled to gravity via the parity-preserving $\propto RF^{2}$ and parity-violating $\propto RF\tilde{F}$ terms. Using the perturbation theory to the leading order
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::960dcc8d534efb4b642f541835764152
http://arxiv.org/abs/2104.14400
http://arxiv.org/abs/2104.14400
Publikováno v:
Physical Review B, 103(15). American Physical Society (APS)
The gap generation in the dice model with local four-fermion interaction is studied. Due to the presence of two valleys with degenerate electron states, there are two main types of gaps. The intra- and intervalley gap describes the electron and hole
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::58a5667664dd161299bbca45b9b9f144
http://arxiv.org/abs/2102.01102
http://arxiv.org/abs/2102.01102
Publikováno v:
Physical Review
We study the explosive production of gauge fields during axion inflation in a novel gradient expansion formalism that describes the time evolution of a set of bilinear electromagnetic functions in position space. Based on this formalism, we are able
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::28a9e8cca305662ebf4d959400436d2c
It is shown that the convective instability in electron fluids in three- and two-dimensional (3D and 2D) Dirac and Weyl semimetals is strongly inhibited. The major obstacles for electron convection are the effects of the Coulomb forces and the moment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03a31418ad9be4376163c71c4def2944