74 citations · 200 across the 25 of their papers we have counts for
17 papers · 1 filter
Spherical solutions to the Klein-Gordon equation in the expanding universe
Karen Yagdjian
We produce an explicit formula for the wave function of the spherically symmetric fields emitted to the FLRW universe with the scale factor generated by the de~Sitter universe. As…
Semilinear Klein-Gordon equation in space-time of black hole, which is gaining mass in the universe with accelerating expansion
Karen Yagdjian, Anahit Galstian
In this paper, we consider the propagation of waves in the space-time of a single black hole with a static Schwarzschild radius in the expanding universe, namely, the solutions of…
Waves in cosmological background with static Schwarzschild radius in the expanding universe
Karen Yagdjian
In this paper, we prove the existence of global in time small data solutions of semilinear Klein-Gordon equations in space-time with a static Schwarzschild radius in the expanding…
The self-interacting Dirac fields in FLRW spacetime
Anahit Galstian, Karen Yagdjian
We prove the existence of global in time solution with the small initial data for the semilinear equation of the spin-1/2 particles in the Friedmann-Lemaitre-Robertson-Walker space…
Small Data Wave Maps in Cyclic Spacetime
Karen Yagdjian, Anahit Galstian, Nathalie M. Luna-Rivera
We study the initial value problem for the wave maps defined on the cyclic spacetime with the target Riemannian manifold that is responsive (see definition of the self coherence st…
Computational Results for the Higgs Boson Equation in the de Sitter Spacetime
Andras Balogh, Jacob Banda, Karen Yagdjian
High performance computations are presented for the Higgs Boson Equation in the de Sitter Space- time using explicit fourth order Runge-Kutta scheme on the temporal discretization…