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We study the properties of the light vector mesons ($\rho$, $\omega$ and$\phi$) in strange hadronic matter using the QCD sum rule approach. Thein-medium masses of the vector mesons are calculated from the modifications ofthe light quark condensates and the gluon condensates in the hadronic medium.The light quark condensates in the hadronic matter are obtained from the valuesof the non strange and strange scalar fields of the explicit chiral symmetrybreaking term in a chiral SU(3) model. The in-medium gluon condensate iscalculated through the medium modification of a scalar dilaton field, which isintroduced into the chiral SU(3) model to simulate the scale symmetry breakingof QCD. The mass of the $\omega$ meson is observed to have initially a dropwith increase in density and then a rise due to the scattering with thebaryons. The mass of the $\rho$ meson is seen to drop with density due todecrease of the light quark condensates in the medium. The effects of isospinasymmetry and strangeness of the medium on the masses of the vector mesons arealso studied in the present work. The $\phi$ meson is observed to have marginaldrop in its mass in the nuclear medium. However, the strangeness of the mediumis seen to lead to an appreciable increase in its mass arising due toscattering with the hyperons.

Light vector meson masses in strange hadronic matter -- a QCD sum rule approach