SCOAP3 Repository 20 records found  1 - 10nextSearch took 0.01 seconds. 
1. More on the Non-Gaussianity of Perturbations in a Nonminimal Inflationary Model / Nozari, K. ; Shojaee, R. ; Darabi, F.
We study nonlinear cosmological perturbations and their possible non-Gaussian character in an extended nonminimal inflation where gravity is coupled nonminimally to both the scalar field and its derivatives. [...]
Published in Advances in High Energy Physics 2018 (2018) 2343896 10.1155/2018/2343896 arXiv:1808.04259
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2. 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/s10052-018-6041-4
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3. Noncritical anisotropic Bianchi type I string cosmology with α corrections / Naderi, F. ; Rezaei-Aghdam, A. ; Darabi, F.
We present noncritical Bianchi type I string cosmology solutions in the presence of central charge deficit term Λ. [...]
Published in Physical Review D 98 (2018) 10.1103/PhysRevD.98.026009 arXiv:1712.03581
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4. 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 constant-like and phantom. [...]
Published in EPJC 78 (2018) 342 10.1140/epjc/s10052-018-5842-9
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5. 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=Nsur-Nbulk 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 energy-momentum and dark energy, respectively. [...]
Published in EPJC 78 (2018) 38 10.1140/epjc/s10052-017-5494-1
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6. 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/s10052-017-5502-5
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7. 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 4-dimensional brane is checked. [...]
Published in Physics letters B (2017) 10.1016/j.physletb.2017.11.061
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8. 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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9. Evolution of spherical over-densities in tachyon scalar field model / Setare, M.R. ; Felegary, F. ; Darabi, F.
We study the tachyon scalar field model in flat FRW cosmology with the particular potential ϕ−2 and the scale factor behavior a(t)=tn . [...]
Published in Physics letters B (2017) 10.1016/j.physletb.2017.06.039
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10. Black hole solutions surrounded by perfect fluid in Rastall theory / Heydarzade, Y. ; Darabi, F.
In this work, we obtain uncharged∖charged Kiselev-like 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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1 Darabi, Farhad
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