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Huygens' Principle for the Klein-Gordon equation in the de Sitter spacetime
Huygens’ Principle Klein-Gordon Equation de Sitter spacetime Higuchi Bound
2012/6/14
In this article we prove that the Klein-Gordon equation in the de Sitter spacetime obeys the Huygens' principle if and only if the physical mass $m$ of the scalar field and the dimension $n$ of the sp...
Spherical linear waves in de Sitter spacetime
spherical linear waves de Sitter spacetime Analysis of PDEs
2011/9/29
Abstract: With the Einstein-scalar field equations with positive cosmological constant in mind, we employ Christodoulou's framework, developed to study the vanishing cosmological constant case, to sph...
We study the motion of spinning test bodies in the de Sitter spacetime of constant positive curvature. With the help of the 10 Killing vectors, we derive the 4-momentum and the tensor of spin explici...
Infrared behavior and gauge artifacts in de Sitter spacetime. I. The photon field
Infrared behavior gauge artifacts
2010/12/27
We study the infrared (long distance) behavior of the free photon field in de Sitter spacetime. Using a two-parameter family of gauge fixing terms, we show that the infrared (IR) behavior of the two-...
Infrared behavior and gauge artifacts in de Sitter spacetime. I. The photon field
Infrared behavior gauge artifacts de Sitter spacetime
2010/12/20
We study the infrared (long distance) behavior of the free photon field in de Sitter spacetime.
Using a two-parameter family of gauge fixing terms, we show that the infrared (IR) behavior of the two-...