436 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Consejo Nacional de Investigaciones Científicas y TécnicasAR144 papers
- Universidad Nacional de La PlataAR72 papers
- Universidad de ColimaMX41 papers
- Centro Científico Tecnológico - La PlataAR40 papers
- Institute for Complex SystemsIT23 papers
- Sapienza University of RomeIT22 papers
- University of TrentoIT18 papers
- Centre National de la Recherche ScientifiqueFR13 papers
- Instituto de Fisica de Liquidos y Sistemas BiologicosAR13 papers
- University of MichiganUS12 papers
- Cornell UniversityUS11 papers
- University of CambridgeGB11 papers
6 papers · 2 filters
Further analysis of the connected moments expansion
Paolo Amore, Francisco M. Fernández, Martin Rodriguez
We apply the connected moments expansion to simple quantum--mechanical examples and show that under some conditions the main equations of the approach are no longer valid. In parti…
High--order connected moments expansion for the Rabi Hamiltonian
Paolo Amore, Francisco M. Fernández, Martin Rodriguez
We analyze the convergence properties of the connected moments expansion (CMX) for the Rabi Hamiltonian. To this end we calculate the moments and connected moments of the Hamiltoni…
Variational and perturbative approaches to the confined hydrogen atom with a moving nucleus
Francisco M. Fernández, N. Aquino, A. Flores-Riveros
We calculate the ground--state energy and other physical properties of the hydrogen atom inside a spherical box with an impenetrable wall. We apply the variational method and pertu…
Perturbation theory for confined systems
Francisco M. Fernández
We discuss the application of perturbation theory to a system of particles confined in a spherical box. A simple argument shows that the particles behave almost independently in su…
Simple one-dimensional quantum-mechanical model for a particle attached to a surface
Francisco M. Fernández
We present a simple one-dimensional quantum-mechanical model for a particle attached to a surface. We solve the Schrödinger equation in terms of Weber functions and discuss the beh…
Comment on `Effective polar potential in the central force Schrödinger equation'
Francisco M. Fernández
We analyze a recent pedagogical proposal for an alternative treatment of the angular part of the Schrödinger equation with a central potential. We show that the authors' arguments…