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
12 papers · 1 filter
Symmetry-adapted formulation of the combined G-particle-hole Hypervirial equation and Hermitian Operator method
Diego R. Alcoba, Gustavo E. Massaccesi, Ofelia B. Oña +3
High accuracy energies of low-lying excited states, in molecular systems, have been determined by means of a procedure which combines the G-particle-hole Hypervirial (GHV) equation…
Bound states of a charged particle in the field of an electric quadrupole in two dimensions
Francisco M. Fernández
The Schrödinger equation for a charged particle in the field of a nonrelativistic electric quadrupole in two dimensions is known to be separable in spherical coordinates. We invest…
Stochastic Resonance and Dynamic First-Order Pseudo-Phase Transitions in the Irreversible Growth of Thin Films under Spatially Periodic Magnetic Fields
Ernesto S. Loscar, Julián Candia
We study the irreversible growth of magnetic thin films under the influence of spatially periodic fields by means of extensive Monte Carlo simulations. We find first-order pseudo-p…
PT-symmetry broken by point-group symmetry
Francisco M Fernández, Javier Garcia
We discuss a PT-symmetric Hamiltonian with complex eigenvalues. It is based on the dimensionless Schrödinger equation for a particle in a square box with the PT-symmetric potential…
Non-hermitean hamiltonians with unitary and antiunitary symmetry
Francisco M. Fernández, Javier Garcia
We analyze several non-Hermitian Hamiltonians with antiunitary symmetry from the point of view of their point-group symmetry. It enables us to predict the degeneracy of the energy…
Rayleigh-Ritz variational method with suitable asymptotic behaviour
Javier Garcia, Francisco M Fernández
We discuss Rayleigh-Ritz variational calculations with nonorthogonal basis sets that exhibit the correct asymptotic behaviour. We construct the suitable basis sets for general one-…
-symmetric strings
Paolo Amore, Francisco M. Fernández, Javier Garcia +1
We study both analytically and numerically the spectrum of inhomogeneous strings with -symmetric density. We discuss an exactly solvable model of -symme…
Critical parameters for non-hermitian Hamiltonians
Francisco M Fernández, Javier Garcia
We calculate accurate critical parameters for a class of non-hermitian Hamiltonians by means of the diagonalization method. We study three one-dimensional models and two perturbed…
Tenement house model
Wojciech Ganczarek
Most of the common used models of epidemic spreading allow contaminating many neighbors of a particular node in the network. They are usually analyzed by differential equations on…
Superfluid transport of information in turning flocks of starlings
Alessandro Attanasi, Andrea Cavagna, Lorenzo Del Castello +8
Collective decision-making in biological systems requires all individuals in the group to go through a behavioural change of state. During this transition, the efficiency of inform…
Study of the electronic nematic phase of SrRuO with precise control of the applied magnetic field vector
J. A. N. Bruin, R. A. Borzi, S. A. Grigera +3
We report a study of the magnetoresistivity of high purity SrRuO, in the vicinity of its electronic nematic phase. By employing a triple-axis (9/1/1T) vector magnet, we…
On the real matrix representation of PT-symmetric operators
Francisco M. Fernández
We discuss the construction of real matrix representations of PT-symmetric operators. We show the limitation of a general recipe presented some time ago for non-Hermitian Hamiltoni…