output
20132025
most citedAnisotropic Friedel oscillations in graphene-like materials: The Dirac point approximation in wave-number dependent quantities revisited

12 citations

13 papers

cs.CV2025★ 2 cited

An Intelligent Multi-task Supply Chain Model Based on Bio-inspired Networks

Mehdi Khaleghi, Sobhan Sheykhivand, Nastaran Khaleghi +1

The sustainability of supply chain plays a key role in achieving optimal performance in controlling the supply chain. The management of risks that occur in a supply chain is a fund…

gr-qc2021★ 2 cited

On Einstein equations with cosmological constant in braneworld models

F. Gholami, F. Darabi, A. Haji Badali

In this paper, we investigate the Einstein equations with cosmological constant for Randall-Sundrum (RS) and Dvali-Gabadadze-Porrati (DGP) models to determine the warp functions in…

hep-th2018★ 3 cited

Tsallis -entropy in an accelerating BIon

Hossein Ghaforyan, Somayeh Shoorvazi, Alireza Sepehri +1

In this research, we consider thermodynamically the behaviour of an accelerating BIon and show that the entropy of this system has the form of Tsallis entropy. A BIon is a system t…

gr-qc2018★ 6 cited

Classification of Einstein equations with cosmological constant in warped product space-time

F. Gholami, A. Haji-Badali, F. Darabi

We classify all warped product space-times in three categories as i) generalized twisted product structures, ii) base conformal warped product structures and iii) generalized stati…

cs.DS2017

A new algorithm for Solving 3-CNF-SAT problem

Belal Qasemi

NP-Complete problems have an important attribute that if one NP-Complete problem can be solved in polynomial time, all NP-Complete problems will have a polynomial solution. The 3-C…

gr-qc2016★ 12 cited

Multiply-warped product metrics and reduction of Einstein equations

F. Gholami, F. Darabi, A. Haji-Badali

It is shown that for every multidimensional metric in the multiply warped product form with warp functions , , associated to…

math.SG2016★ 1 cited

Some compatible Poisson structures and integrable bi-Hamiltonian systems on four dimensional and nilpotent six dimensional symplectic real Lie groups

J. Abedi-Fardad, A. Rezaei-Aghdam, Gh. Haghighatdoost

We provide an alternative method for obtaining of compatible Poisson structures on Lie groups by means of the adjoint representations of Lie algebras. In this way, we calculate som…

math.DG2016★ 8 cited

On cosmological constant of Generalized Robertson-Walker space-times

Morteza Faghfouri, Ali Haji Badali, Fatemeh Gholami

We study Einstein's equation in and warped spaces and classify all such spaces satisfying Einstein equations . We show…

cond-mat.mes-hall2016★ 12 cited

Anisotropic Friedel oscillations in graphene-like materials: The Dirac point approximation in wave-number dependent quantities revisited

T. Farajollahpour, S. Khamouei, S. Safari Shateri +1

Friedel oscillations of the graphene-like materials are investigated theoretically beyond the Dirac point-approximation. Numerical calculations have been performed within the rando…

math-ph2015★ 6 cited

Classification of four dimensional real Lie bialgebras of symplectic type and their Poisson-Lie groups

J. Abedi-Fardad, A. Rezaei-Aghdam, Gh. Haghighatdoost

In this paper we classify all four dimensional real Lie bialgebras of symplectic type. The classical r- matrices for these Lie bialgebras and Poisson structures on all of the relat…

math-ph2014★ 6 cited

Integrable and superintegrable Hamiltonian systems with four dimensional real Lie algebras as symmetry of the systems

J. Abedi-Fardad, A. Rezaei-Aghdam, Gh. Haghighatdoost

We construct integrable and superintegrable Hamiltonian systems using the realizations of four dimensional real Lie algebras as a symmetry of the system with the phase space R4 and…

cond-mat.mes-hall2013

The influence of the surface roughness on dielectric function of two-dimensional electron gas

A. Phirouznia, L. Javadian, J. Poursamad Bonab +1

Low field response function calculations have been performed on a two-dimensional electron gas with well-defined electron-surface roughness scattering. The Lindhard model was emplo…

cond-mat.mes-hall2013★ 5 cited

Anisotropic optical conductivity and electron-hole asymmetry in doped monolayer graphene in the presence of the Rashba coupling

S. S. Sadeghi, A. Phirouznia, V. Fallahi

In this study, the Optical conductivity of substitutionary doped graphene is investigated in presence of the Rashba spin orbit coupling (RSOC). Calculations have been performed wit…