65 citations · 263 across the 9 of their papers we have counts for
9 papers
Fast Summation of Divergent Series and Resurgent Transseries in Quantum Field Theories from Meijer-G Approximants
Hector Mera, Thomas G. Pedersen, Branislav K. Nikolic
We demonstrate that a Meijer-G-function-based resummation approach can be successfully applied to approximate the Borel sum of divergent series, and thus to approximate the Borel-É…
Hypergeometric resummation of self-consistent sunset diagrams for electron-boson quantum many-body systems out of equilibrium
Hector Mera, Thomas Garm Pedersen, Branislav K. Nikolic
A newly developed hypergeometric resummation technique [H. Mera et al., Phys. Rev. Lett. 115, 143001 (2015)] provides an easy-to-use recipe to obtain conserving approximations with…
Stark effect in low-dimension hydrogen
Thomas Garm Pedersen, Héctor Mera, Branislav K. Nikolić
Studies of atomic systems in electric fields are challenging because of the diverging perturbation series. However, physically meaningful Stark shifts and ionization rates can be f…
Nonperturbative Quantum Physics from Low-Order Perturbation Theory
Hector Mera, T. G. Pedersen, Branislav K. Nikolic
The Stark effect in hydrogen and the cubic anharmonic oscillator furnish examples of quantum systems where the perturbation results in a certain ionization probability by tunneling…
Charged impurity scattering and mobility in gated silicon nanowires
Martin P. Persson, Hector Mera, Yann-Michel Niquet +2
We study the effects of charged impurity scattering on the electronic transport properties of <110>-oriented Si nanowires in a gate-all-around geometry, where the impurity potentia…
Continuous corrections to the molecular Kohn-Sham gap and virtual orbitals
Hector Mera
We use projector operators to correct the Kohn-Sham Hamiltonian of density functional theory (KS-DFT) so that the resulting mean-field scheme yields, in finite systems, virtual orb…