1.

Surrounded Vaidya solution by cosmological fields
/ Heydarzade, Y. ; Darabi, F.
In the present work, we study the general surrounded Vaidya solution by the various cosmological fields and its nature describing the possibility of the formation of naked singularities or black holes. [...]
Published in EPJC 78 (2018) 582
10.1140/epjc/s1005201860414
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2.

Surrounded Vaidya black holes: apparent horizon properties
/ Heydarzade, Y. ; Darabi, F.
We study the thermodynamical features and dynamical evolutions of various apparent horizons associated with the Vaidya evaporating black hole surrounded by the cosmological fields of dust, radiation, quintessence, cosmological constantlike and phantom. [...]
Published in EPJC 78 (2018) 342
10.1140/epjc/s1005201858429
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3.

Emergent cosmos in Einstein–Cartan theory
/ Hadi, H. ; Heydarzade, Y. ; Hashemi, M. ; Darabi, F.
Based on Padmanabhan’s proposal, the accelerated expansion of the universe can be driven by the difference between the surface and bulk degrees of freedom in a region of space, described by the relation dV/dt=NsurNbulk where Nsur and Nbulk=Nem+Nde are the degrees of freedom assigned to the surface area and the matter–energy content inside the bulk such that the indices “em” and “de” represent energymomentum and dark energy, respectively. [...]
Published in EPJC 78 (2018) 38
10.1140/epjc/s1005201754941
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4.

Einstein and Rastall theories of gravitation in comparison
/ Darabi, F. ; Moradpour, H. ; Licata, I. ; Heydarzade, Y. ; et al
We profit by a recent paper of Visser claiming that Rastall gravity is equivalent to Einstein gravity to compare the two gravitational theories in a general way. [...]
Published in EPJC 78 (2018) 25
10.1140/epjc/s1005201755025
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5.

Braneworld black holes and entropy bounds
/ Heydarzade, Y. ; Hadi, H. ; Corda, C. ; Darabi, F.
The Bousso's D bound entropy for the various possible black hole solutions on a 4dimensional brane is checked. [...]
Published in Physics letters B (2017)
10.1016/j.physletb.2017.11.061
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6.

Vaidya spacetime in massive gravity's rainbow
/ Heydarzade, Yaghoub ; Rudra, Prabir ; Darabi, Farhad ; Ali, Ahmed Farag ; et al
In this paper, we will analyze the energy dependent deformation of massive gravity using the formalism of massive gravity's rainbow. [...]
Published in Physics letters B (2017)
10.1016/j.physletb.2017.09.049
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7.

Black hole solutions surrounded by perfect fluid in Rastall theory
/ Heydarzade, Y. ; Darabi, F.
In this work, we obtain uncharged∖charged Kiselevlike black holes as a new class of black hole solutions surrounded by perfect fluid in the context of Rastall theory. [...]
Published in Physics letters B (2017)
10.1016/j.physletb.2017.05.064
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8.

A generalization to the Rastall theory and cosmic eras
/ Moradpour, H. ; Heydarzade, Y. ; Darabi, F. ; Salako, Ines G.
A generalized version for the Rastall theory is proposed showing the agreement with the cosmic accelerating expansion. [...]
Published in EPJC 77 (2017) 259
10.1140/epjc/s100520174811z
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9.

Emergent universe in the braneworld scenario
/ Heydarzade, Y. ; Hadi, H. ; Darabi, F. ; Sheykhi, A.
According to Padmanabhan’s proposal, the difference between the surface degrees of freedom and the bulk degrees of freedom in a region of space may result in the acceleration of Universe expansion through the relation ΔV/Δt=NsurNbulk where Nbulk and Nsur are referred to the degrees of freedom related to the matter and energy content inside the bulk and surface area, respectively (Padmanabhan, arXiv:1206.4916v1 , 2012 ). [...]
Published in EPJC 76 (2016) 323
10.1140/epjc/s1005201641621
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10.

On the stability of Einstein static universe in doubly general relativity scenario
/ Khodadi, M. ; Heydarzade, Y. ; Nozari, K. ; Darabi, F.
By presenting a relation between the average energy of the ensemble of probe photons and the energy density of the universe, in the context of gravity’s rainbow or the doubly general relativity scenario, we introduce a rainbow FRW universe model. [...]
Published in EPJC 75 (2015) 590
10.1140/epjc/s100520153821y
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