27 citations · 133 across the 13 of their papers we have counts for
13 papers
Efficient GW calculations via the interpolation of the screened interaction in momentum and frequency space: The case of graphene
Alberto Guandalini, Dario A. Leon, Pino D'Amico +4
The GW self-energy may become computationally challenging to evaluate because of frequency and momentum convolutions. These difficulties were recently addressed by the development…
Efficient full frequency GW for metals using a multipole approach for the dielectric screening
Dario A. Leon, Andrea Ferretti, Daniele Varsano +2
The properties of metallic systems with important and structured excitations at low energies, such as Cu, are challenging to describe with simple models like the plasmon pole appro…
Graphene decoupling through oxygen intercalation on Gr/Co and Gr/Co/Ir interfaces
Dario A. Leon, Andrea Ferretti, Daniele Varsano +2
We perform a density functional theory study of the effects of oxygen adsorption on the structural and electronic properties of Gr/Co(0001) and Gr/Co/Ir(111) interfaces. In both in…
Frequency dependence in GW made simple using a multi-pole approximation
Dario A. Leon, Claudia Cardoso, Tommaso Chiarotti +3
In the approximation, the screened interaction is a non-local and dynamical potential that usually has a complex frequency dependence. A full description of such dependenc…
Narrowing of d bands of FeCo layers intercalated under graphene
Daniela Pacilè, Claudia Cardoso, Giulia Avvisati +7
We report on the electronic properties of an artificial system obtained by the intercalation of equiatomic FeCo layers under graphene grown on Ir(111). Upon intercalation, the FeCo…
Magnetic response and electronic states of well defined Graphene/Fe/Ir(111) heterostructure
Claudia Cardoso, Giulia Avvisati, Pierluigi Gargiani +7
We investigate a well defined heterostructure constituted by magnetic Fe layers sandwiched between graphene (Gr) and Ir(111). The challenging task to avoid Fe-C solubility and Fe-I…
Estimating the number of available states for normal and tumor tissues in gene expression space
Augusto Gonzalez, Frank Quintela, Dario A. Leon +2
The topology of gene expression space for a set of 12 cancer types is studied by means of an entropy-like magnitude, which allows the characterization of the regions occupied by tu…
On the gene expression landscape of cancer
Augusto Gonzalez, Yasser Perera, Rolando Perez
A principal component analysis of the TCGA data for 15 cancer localizations unveils the following qualitative facts about tumors: 1) The state of a tissue in gene expression space…
Modeling evolution in a Long Time Evolution Experiment with E. Coli
Dario A. Leon, Augusto Gonzalez
Taking into account an evolutionary model of mutations in term of Levy Fights that was previously constructed, we designed an algorithm to reproduce the evolutionary dynamics of th…
Gene expression rearrangements denoting changes in the biological state
Augusto Gonzalez, Joan Nieves, Maria Luisa Bringas Vega +1
In many situations, the gene expression signature is a unique marker of the biological state. We study the modification of the gene expression distribution function when the biolog…
Modeling mutations in bacteria and human tissues
Dario A. Leon
This thesis is aimed at studying mutations, understood as trajectories in the DNA configuration space. An evolutive model of mutations in terms of Levy flights is proposed. The par…
Symmetries of Coefficients of Three-Term Relations for the Hypergeometric Series
Yuka Yamaguchi
Any three hypergeometric series whose respective parameters, a, b and c, differ by integers satisfy a linear relation with coefficients that are rational functions of a, b, c and t…
Levy model of cancer
Roberto Herrero, Dario A. Leon, Augusto Gonzalez
A small portion of a tissue defines a microstate in gene expression space. Mutations, epigenetic events or external factors cause microstate displacements which are modeled by comb…