The large-scale structure formation in an expanding universe

被引：3
作者：
Hameeda, Mir [1 ,2 ]
Pourhassan, Behnam [3 ]
Masood, Syed [4 ]
Faizal, Mir [5 ,6 ,7 ]
Wang, Li-Gang [4 ]
Abass, Shohaib [8 ]
机构：
[1] SP Coll, Dept Phys, Srinagar 190001, Kashmir, India
[2] Inter Univ Ctr Astron & Astrophys, Pune, Maharashtra, India
[3] Damghan Univ, Sch Phys, Damghan 3671641167, Iran
[4] Zhejiang Univ, Dept Phys, Zhejiang Prov Key Lab Quantum Technol & Device, Hangzhou 310027, Peoples R China
[5] Univ British Columbia, Irving K Barber Sch Arts & Sci, Kelowna, BC V1V 1V7, Canada
[6] Univ Lethbridge, Dept Phys & Astron, Lethbridge, AB T1K 3M4, Canada
[7] Canadian Quantum Res Ctr, 204-3002 32 Ave, Vernon, BC V1T 2L7, Canada
[8] Cent Univ Kashmir, Dept Phys, Tulmulla Campus, Ganderbal 191131, Kashmir, India
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2022年 / 37卷 / 15期
关键词：
Dark energy; thermodynamics and statistics; clustering of galaxies; COSMOLOGICAL CONSTANT; CLUSTERS; GALAXIES; PROJECT; EVOLUTION; MODEL;
D O I：
10.1142/S0217751X22500865
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
In this paper, we analyze the effects of expansion on large-scale structure formation in our universe. We do that by incorporating a cosmological constant term in the gravitational partition function. This gravitational partition function with a cosmological constant is used for analyzing the thermodynamics of this system. We analyze the virial expansion for this system, and obtain its equation of state. It is observed that the generalization of this equation of state is like the Van der Waals equation. We also analyze a gravitational phase transition in this system using the mean-field theory. We construct the cosmic energy equation for this system of galaxies, and discuss its consequences. We obtain and analyze the distribution function for this system, using the gravitational partition function. We also compare the results obtained in this paper with the observational data.
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页数：30
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