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
16 papers · 1 filter
Ageing and crystallization in a lattice glass model
Alejandro Seif, Ernesto S. Loscar, Tomas S. Grigera
We have studied a the 3- lattice glass of Pica Ciamarra, Tarzia, de Candia and Coniglio [Phys.\ Rev.\ E. 67, 057105 (2013)], which has been shown to reproduce several features o…
Small-energy series for one-dimensional quantum-mechanical models with non-symmetric potentials
Paolo Amore, Francisco M. Fernández
We generalize a recently proposed small-energy expansion for one-dimensional quantum-mechanical models. The original approach was devised to treat symmetric potentials and here we…
Silent Flocks
Andrea Cavagna, Irene Giardina, Tomas S. Grigera +4
Experiments find coherent information transfer through biological groups on length and time scales distinctly below those on which asymptotically correct hydrodynamic theories appl…
SIR model on a dynamical network and the endemic state of an infectious disease
Martin Dottori, Gabriel Fabricius
In this work we performed a numerical study of an epidemic model that mimics the endemic state of whooping cough in the pre-vaccine era. We considered a stochastic SIR model on dyn…
Charge ordering in a pure spin model: dipolar spin-ice
R. A. Borzi, D. Slobinsky, S. A. Grigera
We study the dipolar spin-ice model at fixed density of single excitations, , using a Monte Carlo algorithm where processes of creation and annihilation of such excitations are…
Unitary transformations of a family of two-dimensional anharmonic oscillators
Francisco M. Fernández, Javier Garcia
In this paper we analyze a recent application of perturbation theory by the moment method to a family of two-dimensional anharmonic oscillators. By means of straightforward unitary…
Perturbation theory by the moment method and point-group symmetry
Francisco M. Fernández
We analyze earlier applications of perturbation theory by the moment method (also called inner product method) to anharmonic oscillators. For concreteness we focus on two-dimension…
Non-Hermitian oscillators with symmetry
Paolo Amore, Francisco M. Fernández, Javier Garcia
We analyse some PT-symmetric oscillators with symmetry that depend on a potential parameter . We calculate the eigenvalues and eigenfunctions for each irreducible repres…
Monopole ordered phases in dipolar and nearest-neighbours Ising pyrochlore: from spin ice to the "all-in--all-out" antiferromagnet
Pamela C. Guruciaga, Santiago A. Grigera, Rodolfo A. Borzi
We study Ising pyrochlores by means of Monte Carlo simulations. We cover a set of exchange constants ranging from the frustrated ferromagnetic case (spin-ice) to the fully-ordered…
Specific heat anomaly in a supercooled liquid with amorphous boundary conditions
Daniel A. Martin, Andrea Cavagna, Tomas S. Grigera
We study the specific heat of a model supercooled liquid confined in a spherical cavity with amorphous boundary conditions. We find the equilibrium specific heat has a cavity-size-…
Is space-time symmetry a suitable generalization of parity-time symmetry?
Paolo Amore, Francisco M. Fernández, Javier Garcia
We discuss space-time symmetric Hamiltonian operators of the form , where is Hermitian and real. is invariant under the unitary operatio…
Ad hoc physical Hilbert spaces in Quantum Mechanics
Francisco M. Fernández, Javier Garcia, Iveta Semorádová +1
The overall principles of what is now widely known as PT-symmetric quantum mechanics are listed, explained and illustrated via a few examples. In particular, models based on an ele…
On the crossing of the energy levels of a parameter-dependent quantum-mechanical Hamiltonian
Francisco M. Fernández
The non-crossing rule for the energy levels of a parameter-dependent Hamiltonian is revisited and a flaw in a commonly accepted proof is revealed. Some aspects of avoided crossings…
Joint fitting reveals hidden interactions in tumor growth
Lucas Barberis, Miaguel Ángel Pasquale, Carlos Alberto Condat
Tumor growth is often the result of the simultaneous development of two or more cancer cell populations. Their interaction between them characterizes the system evolution. To obtai…
Flocking and turning: a new model for self-organized collective motion
Andrea Cavagna, Lorenzo Del Castello, Irene Giardina +8
Birds in a flock move in a correlated way, resulting in large polarization of velocities. A good understanding of this collective behavior exists for linear motion of the flock. Ye…
Algebraic treatment of -symmetric coupled oscillators
Francisco M. Fernández
The purpose of this paper is the discussion of a pair of coupled linear oscillators that has recently been proposed as a model of a system of two optical resonators. By means of an…