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We calculate the response functions of a freely falling Unruh detector in deSitter space coupled to scalar fields of different coupling to the curvature,including the minimally coupled massless case. Although the responses differstrongly in the infrared as a consequence of the amplification of superhorizonmodes, the energy levels of the detector are thermally populated.Comment: 16 pages, 1 figure, accepted for publication by Classical and Quantum  Gravit

Unruh response functions for scalar fields in de Sitter space