https://doi.org/10.1140/epjc/s10052-019-7281-7
Regular Article - Theoretical Physics
Modified theory of gravity and clustering of multi-component system of galaxies
1
Department of Physics, S.P. Collage, Srinagar, Kashmir, 190001, India
2
Visiting Associate, IUCCA, Pune, 41100, India
3
School of Physics, Damghan University, Damghan, 3671641167, Iran
4
Department of Physics and Astronomy, University of Lethbridge, Lethbridge, AB, T1K 3M4, Canada
5
Irving K. Barber School of Arts and Sciences, University of British Columbia-Okanagan, Kelowna, BC, V1V 1V7, Canada
6
School of Physics, University of Hyderabad, Hyderabad, 500 046, India
7
Department of Physics, Maulana Azad National Urdu University, Hyderabad, 500 032, India
* e-mail: b.pourhassan@du.ac.ir
Received:
19
May
2018
Accepted:
7
September
2019
Published online:
17
September
2019
In this paper, we analyze the clustering of galaxies using a modified theory of gravity, in which the field content of general relativity has been be increased. This increasing in the field content of general relativity changes the large distance behavior of the theory, and in weak field approximation, it will also modify the large distance behavior of Newtonian potential. So, we will analyzing the clustering of multi-component system of galaxies interacting through this modified Newtonian potential. We will obtain the partition function for this multi-component system, and study the thermodynamics of this system. So, we will analyze the effects of the large distance modification to the Newtonian potential on Helmholtz free energy, internal energy, entropy, pressure and chemical potential of this system. We obtain also the modified distribution function and the modified clustering parameter for this system, and hence observe the effect of large distance modification of Newtonian potential on clustering of galaxies.
© The Author(s), 2019
