  In the present work, we have studied how the rotation of the QGP medium
affects the transport coefficients and observables in heavy ion collisions. For
the noncentral collisions, although most of the angular momentum gets carried
away by the spectators, there still remains a finite angular momentum with a
finite range of angular velocity, which thus incites rotation in the produced
matter. As a result, various properties of the QGP medium are likely to be
modulated by the rotation. We have calculated the transport coefficients and
observables, such as electrical conductivity, thermal conductivity, Knudsen
number, elliptic flow, specific heat at constant pressure, specific heat at
constant volume, trace anomaly, thermal diffusion constant and isothermal
compressibility using the kinetic theory to see the effect of rotation on them.
In particular, we have used the novel relaxation time approximation for the
collision integral in the relativistic Boltzmann transport equation to derive
the transport coefficients and compared them with their values in the
relaxation time approximation within the kinetic theory approach in conjunction
with the finite angular velocity. We have found that the angular velocity plays
an important role and enhances the flow of charge and heat in the medium.
Further, as compared to the relaxation time approximation, the electrical and
thermal conductivities have smaller values in the novel relaxation time
approximation and these differences between the conductivities in the said
approximations are more pronounced at high temperature than at low temperature.
Furthermore, all the aforesaid observables are found to be sensitive to the
rotation of the QGP medium.
