143 citations · 372 across the 7 of their papers we have counts for
7 papers
Variational approach to the excitonic phase transition in graphene
J. Sabio, F. Sols, F. Guinea
We analyze the Coulomb interacting problem in undoped graphene layers by using an excitonic variational ansatz. By minimizing the energy, we derive a gap equation which reproduces…
Sudden interaction quench in the quantum sine-Gordon model
J. Sabio, S. Kehrein
We study a sudden interaction quench in the weak-coupling regime of the quantum sine-Gordon model. The real time dynamics of the bosonic mode occupation numbers is calculated using…
Two-body problem in graphene
J. Sabio, F. Sols, F. Guinea
We study the problem of two Dirac particles interacting through non-relativistic potentials and confined to a two-dimensional sheet, which is the relevant case for graphene layers.…
Variational approach to the Caldeira-Leggett model
Javier Sabio, Fernando Sols
We apply the displaced-oscillator variational ansatz to the Caldeira-Leggett model for a quantum particle in a one-dimensional box described by a tight-binding chain. We focus on t…
f-Sum Rule and Unconventional Spectral Weight Transfer in Graphene
J. Sabio, J. Nilsson, A. H. Castro Neto
We derive and analyze the f-sum rule for a two-dimensional (2D) system of interacting electrons whose behavior is described by the Dirac equation. We apply the sum rule to analyze…
Electrostatic interactions between graphene layers and their environment
J. Sabio, C. Seoanez, S. Fratini +3
We analyze the electrostatic interactions between a single graphene layer and a SiO susbtrate, and other materials which may exist in its environment. We obtain that the leadin…