25 citations · 34 across the 3 of their papers we have counts for
3 papers
gr-qc2010★ 25 cited
Infrared behavior and gauge artifacts in de Sitter spacetime: The photon field
Ahmed Youssef
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) b…
quant-ph2010
Semi-classical behavior of Pöschl-Teller coherent states
H. Bergeron, J. -P. Gazeau, P. Siegl +1
We present a construction of semi-classical states for Pöschl-Teller potentials based on a supersymmetric quantum mechanics approach. The parameters of these "coherent" states are…
hep-th2010★ 9 cited
Krein Spaces in de Sitter Quantum Theories
Jean-Pierre Gazeau, Petr Siegl, Ahmed Youssef
Experimental evidences and theoretical motivations lead to consider the curved space-time relativity based on the de Sitter group or as an appealing substitut…