T Brunier et al 2005 Class. Quantum Grav. 22 59 doi:10.1088/0264-9381/22/1/005
T Brunier1, V K Onemli2 and R P Woodard3
Show affiliationsWe work in the locally de Sitter background of an inflating universe and consider a massless, minimally coupled scalar with a quartic self-interaction. We use dimensional regularization to compute the fully renormalized scalar self-mass-squared at one- and two-loop order for a state which is released in Bunch–Davies vacuum at t = 0. Although the field strength and coupling constant renormalizations are identical to those of flat space, the geometry induces a non-zero mass renormalization. The finite part also shows a sort of growing mass that competes with the classical force in eventually turning off this system's super-acceleration.
Issue 1 (7 January 2005)
Received 25 August 2004
Published 3 December 2004
T Brunier et al 2005 Class. Quantum Grav. 22 59
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