Vacuum fluctuations of the supersymmetric field in curved background

Bilić, Nevenko; Domazet, Silvije; Guberina, Branko (2012) Vacuum fluctuations of the supersymmetric field in curved background. Physics Letters B, 707 (1). pp. 221-227. ISSN 0370-2693

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Abstract

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.

Item Type:	Article
Additional Information:	Imported from arXiv
Uncontrolled Keywords:	vacuum fluctuations; supersymmetry; curved background
Subjects:	NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields NATURAL SCIENCES > Physics > Astronomy and Astrophysics
Divisions:	Theoretical Physics Division
Projects:	Project title Project leader Project code Project type Fundamentalne interakcije u fizici elementarnih čestica i kozmologiji [3635] Nevenko Bilić 098-0982930-2864 MZOS
Depositing User:	Nevenko Bilić
Date Deposited:	16 Apr 2013 07:29
URI:	http://fulir.irb.hr/id/eprint/515
DOI:	10.1016/j.physletb.2011.12.025

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