  Atom interferometry is amongst the most advanced technologies that provides
very high-precision measurements. There can exist a number of obscure forces
that can interfere with the atoms used in this instrument. In the present work,
we are probing possible roles of one such important forces, known as
``blackbody friction force (BBFF)'', that may affect the precisions in the
measurements made using atom interferometers based on the Rb and Cs atoms. The
BBFF can be generated on atoms due to the black-body radiations emitted by the
stray electromagnetic fields present in the experimental set-up and other
metallic shielding. The strength of the BBFF can be calculated by integrating
the complex parts of the dynamic polarizabilities of atoms, which show varying
behaviour at the resonant and non-resonant transitions in the above atoms. Our
analyses suggest that the off-resonant atomic transitions make significant
contributions to the BBFF at low temperatures in the Rb and Cs atom
interferometers. Present study also advocates that it is imperative to carry
out the integration over a wide spectrum of frequencies for correct evaluation
of the BBFF; specially at higher temperatures.
