28 citations · 98 across the 15 of their papers we have counts for
15 papers
The impact of experimental conditions on the observation of channeling and crystalline undulator radiation
Maykel Marquez-Mijares, German Rojas-Lorenzo, Jesus Rubayo-Soneira +3
In this study, we present a comprehensive quantitative analysis of the radiation emitted by 855 MeV electrons propagating through an oriented diamond hetero-crystal. The crystal co…
Positron Channeling in Quasi-Mosaic Bent Crystals: Atomistic Simulations vs. Experiment
Maykel Marquez-Mijares, German Rojas-Lorenzo, Paulo E. Ibanez-Almaguer +2
This paper reports on a comprehensive study of an ultra-relativistic positron beam deflection by an oriented quasi-mosaic crystal. The analysis was carried out for the positron ene…
Simulation of Deflection and Photon Emission of Ultra-Relativistic Electrons and Positrons in a Quasi-Mosaic Bent Silicon Crystal
Paulo E Ibañez-Almaguer, Germán Rojas-Lorenzo, Maykel Márquez-Mijares +4
A comprehensive numerical investigation has been conducted on the angular distribution and spectrum of radiation emitted by 855 MeV electron and positron beams while traversing a '…
Multiple scattering of 855 MeV electrons in amorphous and crystalline silicon: simulations versus experiment
German Rojas-Lorenzo, Jesus Rubayo-Soneira, Maykel Marquez-Mijares +2
The angular distribution function of multiple scattering experienced by 855 MeV electrons passing through an amorphous silicon plate and an oriented silicon crystal has been studie…
Quantum threshold reflection of He atom beams from rough surfaces
G. Rojas-Lorenzo, J. Rubayo-Soneira, S. Miret-Artés +1
Quantum reflection of thermal He atoms from various surfaces (glass slide, GaAs wafer, flat and structured Cr) at grazing conditions is studied within the elastic close-coupling fo…
Quantum reflection of rare gas atoms and molecules from a grating
G. Rojas-Lorenzo, J. Rubayo-Soneira, S. Miret-Artés +1
Quantum reflection is a universal property of atoms and molecules when scattered from surfaces in ultracold collisions. Recent experimental work has documented the quantum reflecti…
Quantum thermodynamics in chiral two--level systems. The quantum stochastic resonance
G. Rojas-Lorenzo, H. C. Peñaate-Rodríguez, A. Dorta-Urra +2
A Langevin canonical framework for a chiral two-level system coupled to a bath of harmonic oscillators is used within a coupling scheme different from the well-known spin-boson mod…
A Langevin canonical approach to the dynamics of chiral two level systems. Thermal averages and heat capacity
H. C. Peñate-Rodríguez, A. Dorta-Urra, P. Bargueño +2
A Langevin canonical framework for a chiral two--level system coupled to a bath of harmonic oscillators is developed within a coupling scheme different to the well known spin-boson…
On non-dissipative and dissipative qubit manifolds
H. C. Peñate-Rodríguez, P. Bargueño, G. Rojas-Lorenzo +1
The trajectories of a qubit dynamics over the two-sphere are shown to be geodesics of certain Riemannian or physically-sound Lorentzian manifolds, both in the non-dissipative and d…
Dissipative Bohmian mechanics within the Caldirola-Kanai framework: A trajectory analysis of wave-packet dynamics in viscid media
A. S. Sanz, R. Martinez-Casado, H. C. Pennate-Rodriguez +2
Classical viscid media are quite common in our everyday life. However, we are not used to find such media in quantum mechanics, and much less to analyze their effects on the dynami…
A Langevin canonical approach to the dynamics of two level systems. I. Populations and coherences
H. C. Peñate-Rodriguez, A. Dorta-Urra, P. Bargueno +2
A canonical framework for chiral two--level systems coupled to a bath of harmonic oscillators is developed to extract, from a stochastic dynamics, the thermodynamic equilibrium val…
Quantum Zeno and anti-Zeno effects in surface diffusion of interacting adsorbates
H. C. Pennate-Rodriguez, R. Martinez-Casado, G. Rojas-Lorenzo +2
Surface diffusion of interacting adsorbates is here analyzed within the context of two fundamental phenomena of quantum dynamics, namely the quantum Zeno effect and the anti-Zeno e…
Linear response theory of activated surface diffusion with interacting adsorbates
R. Martinez-Casado, A. S. Sanz, J. L. Vega +2
Activated surface diffusion with interacting adsorbates is analyzed within the Linear Response Theory framework. The so-called interacting single adsorbate model is justified by me…
Femtosecond response in rare gas matrices doped with NO impurities: A stochastic approach
G. Rojas-Lorenzo, A. S. Sanz, J. Rubayo-Soneira +1
The femtosecond response of NO-doped rare gas matrices is studied within a stochastic Langevin theoretical framework. As is shown, a simple damped harmonic oscillator model can des…
Two-bath model for activated surface diffusion of interacting adsorbates
R. Martinez-Casado, A. S. Sanz, G. Rojas-Lorenzo +1
The diffusion and low vibrational motions of adsorbates on surfaces can be well described by a purely stochastic model, the so-called interacting single adsorbate model, for low-mo…