共 50 条
Gravitational baryogenesis in f(Q, C) gravity
被引:0
|作者:
Samaddar, Amit
[1
]
Singh, S. Surendra
[1
]
Muhammad, Shah
[2
]
Zotos, Euaggelos E.
[3
,4
]
机构:
[1] Natl Inst Technol Manipur, Dept Math, Imphal 795004, India
[2] King Saud Univ, Dept Math, Coll Sci, POB 2455, Riyadh 11451, Saudi Arabia
[3] Aristotle Univ Thessaloniki, Sch Sci, Dept Phys, GR-54124 Thessaloniki, Greece
[4] RUDN Univ, Peoples Friendship Univ Russia, S M Nikolskii Math Inst, Moscow 117198, Russia
关键词:
f(Q;
C);
gravity;
baryogenesis;
generalized;
D O I:
10.1142/S0219887824502311
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
The matter-anti-matter asymmetry in the early Universe's history is explained theoretically by the baryogenesis. It is well known that modified gravity theories are highly effective in explaining the Universe's current accelerated state. In this paper, we examine the gravitational baryogenesis for f(Q, C) gravity, where Q is the non-metricity scalar and C is the boundary term. To perform the baryogenesis, we assume linear, nonlinear and logarithmic forms of f(Q, C). We evaluate the baryon-to-entropy ratio for our models by assuming the power law form of the scale factor a(t) = a(0)t(delta). We also investigate the generalized baryogenesis for our model by assuming the interaction term partial derivative(mu)(Q + C). We constrain the model parameters by comparing with the observational value eta(B)/s = 9.42 x 10(-11). Our derived models are physically viable.
引用
收藏
页数:17
相关论文