Wednesday, January 18, 2012

1110.2393 (Neven Bilic et al.)

Vacuum fluctuations of the supersymmetric field in curved background    [PDF]

Neven Bilic, Silvije Domazet, Branko Guberina
We study a supersymmetric model in curved background spacetime. We calculate the effective action and the vacuum expectation value of the energy momentum tensor using a covariant regularization procedure. A soft supersymmetry breaking induces a nonzero contribution to the vacuum energy density and pressure. Assuming the presence of a cosmic fluid in addition to the vacuum fluctuations of the supersymmetric field an effective equation of state is derived in a self-consistent approach at one loop order. The net effect of the vacuum fluctuations of the supersymmetric fields in the leading adiabatic order is a renormalization of the Newton and cosmological constants.
View original: http://arxiv.org/abs/1110.2393

No comments:

Post a Comment