https://doi.org/10.1140/epjc/s10052-018-5763-7
Regular Article - Theoretical Physics
Modified Gauss–Bonnet gravity with radiating fluids
Department of Sciences and Humanities, National University of Computer and Emerging Sciences, Lahore Campus, Lahore, Pakistan
* e-mail: farasat.shamir@nu.edu.pk
Received:
17
February
2018
Accepted:
23
March
2018
Published online:
3
April
2018
The main purpose of this paper is to discuss structure scalars in the context of 
gravity, where 
is the Gauss–Bonnet invariant and T is the trace of stress energy tensor. For this aim, we have considered the spherically symmetric spacetime and dissipative anisotropic fluid coupled with radiation and heat ejecting shearing matter distributions. We have found these scalar variables by orthogonally decomposing the Riemann curvature tensor in gravity. Moreover, the evolution equations of shear and expansion are also developed with the help of these scalar functions. We have also analysed these scalars by taking and T as constants for dust cloud. The physical behaviour of structure scalars for radiating matter distributions has been examined in the presence of modified gravity. It is shown that the evolutionary stages of relativistic stellar structures can be explored via modified scalar functions.
© The Author(s), 2018
