400 citations
- A. Alikhanyan National LaboratoryAM71 papers
- Sapienza University of RomeIT31 papers
- Universidade Federal da ParaíbaBR26 papers
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di FrascatiIT18 papers
- Yerevan State Linguistic UniversityAM18 papers
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12 papers · 1 filter
Gravitational waves as waveguides
A. A. Kocharyan, M. Samsonyan, V. G. Gurzadyan
We show that gravitational waves can act as waveguides for electromagnetic radiation, that is if the latter is initially aligned with the gravitational waves, then the alignment wi…
Bulk Viscosity of Relativistic Matter in Neutron-Star Mergers
Mark Alford, Arus Harutyunyan, Armen Sedrakian
We discuss the bulk viscosity of hot and dense matter arising from weak-interaction direct Urca processes. We consider two regimes of interest: (a) the neutrino-transparent…
Tidal disruption effects near black holes and Lambda-gravity
A. Stepanian, Sh. Khlghatyan, V. G. Gurzadyan
The tidal disruption of stars in the vicinity of massive black holes is discussed in the context of -gravity. The latter provides an explanation to the Hubble tension as a possi…
Cosmic voids and the kinetic analysis
V. G. Gurzadyan, N. N. Fimin, V. M. Chechetkin
The kinetic approach to the formation of the filaments in the large-scale matter distribution in the Universe is considered within the Vlasov formalism. The structures arise due to…
Vacuum densities and the Casimir forces for branes orthogonal to the AdS boundary
S. Bellucci, A. A. Saharian, V. Kh. Kotanjyan
For a massive scalar field with general curvature coupling we evaluate the Wightman function in the geometry of two parallel branes perpendicular to the AdS boundary. On the separa…
Broadband tunable mid-infrared absorber based on conductive strip-like meta-atom elements
Henrik Parsamyan, Hovhannes Haroyan, Khachatur Nerkararyan
A metamaterial composed of thin metallic strips as an efficient broadband absorber in the mid-infrared spectrum is investigated. Here the matching between dielectric and geometrica…