Thesis Collection
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Browsing by Author "Pérez Bernal, Francisco"
Now showing items 41-56 of 56
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Reactions induced by 11Be beam at Rex-Isolde
Di Pietro, A.; Amorini, F.; Figuera, P.; Fisichella, M.; Lattuada, M.; Musumarra, A.; Papa, M.; Pellegriti, M.; Randisi, G.; Rizzo, F.; Santonocito, D.; Scalia, G.; Scuderi, V.; Strano, E.; Torresi, D.; Acosta Sánchez, Luis Armando
; Martel Bravo, Ismael; Pérez Bernal, Francisco; Borge, M. J. G.; Maira Vidal, A.; Tengblad, Olof; Fraile, L. M.; Jeppesen, H.; Voulot, D.; Wenander, F.; Gómez Camacho, Joaquín; Milin, M.; Raabe, R.; Zadro, M. (EDP Sciences, 2011)
The collision induced by the three Beryllium isotopes, 9,10,11Be, on a 64Zn target were investigated at Ec.m. ≈ 1.4 the Coulomb barrier. The experiments with the radioactive 10,11Be beams were performed at the Rex-Isolde ... -
Scattering of low-energy electrons by polar molecules : an analytic approach
Gómez Camacho, Joaquín; Pérez Bernal, Francisco; Arias Carrasco, José Miguel (American Physical Society, 1998)
The scattering of low-energy electrons by polar molecules is considered. The excitation to the rotational states in the sudden approximation and the effect of the Coulomb dipole force to all orders are taken into account. ... -
Self-averaging in many-body quantum systems out of equilibrium. II. Approach to the localized phase
Torres Herrera, E. Jonathan; De Tomasi, Giuseppe; Schiulaz, Mauro; Pérez Bernal, Francisco; Santos, Lea F. (American Physical Society, 2020)
The self-averaging behavior of interacting many-body quantum systems has been mostly studied at equilibrium. The present paper addresses what happens out of equilibrium, as the increase of the strength of on-site disorder ... -
Self-averaging in many-body quantum systems out of equilibrium: Chaotic systems
Schiulaz, Mauro; Torres Herrera, E. Jonathan; Pérez Bernal, Francisco; Santos, Lea F. (American Physical Society, 2020)
Despite its importance to experiments, numerical simulations, and the development of theoretical models, self-averaging in many-body quantum systems out of equilibrium remains underinvestigated. Usually, in the chaotic ... -
Signatures of excited-state quantum phase transitions in quantum many-body systems: Phase space analysis
Wang, Qian; Pérez Bernal, Francisco (American Physical Society, 2021)
Using the Husimi quasiprobability distribution, we investigate the phase space signatures of excited-state quantum phase transitions (ESQPTs) in the Lipkin-Meshkov-Glick and coupled top models. We show that the ESQPT is ... -
Speck of chaos
Santos, Lea F.; Pérez Bernal, Francisco; Torres Herrera, E. Jonathan (American Physical Society, 2020-10)
It has been shown that, despite being local, a perturbation applied to a single site of the one-dimensional XXZ model is enough to bring this interacting integrable spin-1/2 system to the chaotic regime. Here, we show ... -
Spectral kissing and its dynamical consequences in the squeeze-driven Kerr oscillator
Chávez Carlos, Jorge; Lezama, Talía L. M.; Cortiñas, Rodrigo G.; Venkatraman, Jayameenakshi; Devoret, Michel H.; Batista, Victor S.; Pérez Bernal, Francisco; Santos, Lea F. (Nature Research, 2023)
Transmon qubits are the predominant element in circuit-based quantum information processing, such as existing quantum computers, due to their controllability and ease of engineering implementation. But more than qubits, ... -
Structure effects in the reactions 9,10,11Be+64Zn at the Coulomb barrier
Scuderi, V.; Di Pietro, A.; Acosta Sánchez, Luis Armando; Amorini, F.; Borge, M. J. G.; Figuera, P.; Fisichella, M.; Fraile, L. M.; Gómez Camacho, Joaquín; Jeppesen, H.; Lattuada, M.; Martel Bravo, Ismael; Milin, M.; Musumarra, A.; Papa, M.; Pellegriti, M. G.; Pérez Bernal, Francisco; Raabe, R.; Randisi, G.; Rizzo, F.; Santonocito, D.; Scalia, G.; Torresi, D.; Vidal, A. M.; Zadro, M.; Tengblad, Olof (IOP Publishing, 2011)
Elastic scattering and direct reactions have been studied for the collisions induced by the three Beryllium isotopes 9,10,11Be, on a medium mass 64Zn target at energies around the Coulomb barrier. The elastic scattering ... -
Structure of eigenstates and quench dynamics at an excited state quantum phase transition
Santos, Lea F.; Pérez Bernal, Francisco (American Physical Society, 2015)
We study the structure of the eigenstates and the dynamics of a system that undergoes an excited state quantum phase transition (ESQPT). The analysis is performed for two-level pairing models characterized by a U(n + ... -
A study of the bending motion in tetratomic molecules by the algebraic operator expansion method
Larese, Danielle; Caprio, Mark A.; Pérez Bernal, Francisco; Iachello, F. (American Institute of Physics, 2014)
We study the bending motion in the tetratomic molecules C2H2 (˜X 1 + g ), C2H2 ( ˜A 1Au) trans-S1, C2H2 ( ˜A 1A2) cis-S1, and ˜X 1A1 H2CO. We show that the algebraic operator expansion method with only linear terms ... -
Study of the elastic scattering of 6He on 208Pb at energies around the Coulomb barrier
Sánchez Benítez, Ángel Miguel; Escrig, D.; Álvarez, M. A. G.; Andrés, M. V.; Angulo, C.; García Borge, María José; García Ramos, José Enrique; Pérez Bernal, Francisco (Elsevier, 2008-04-15)
The elastic scattering of 6He on 208Pb has been measured at laboratory energies of 14, 16, 18 and 22 MeV. These data were analyzed using phenomenological Woods- Saxon form factors and optical model calculations. A ... -
A study of the Raman spectrum of CO2 using an algebraic approach
Sánchez Castellanos, M.; Lemus, R.; Carvajal Zaera, Miguel; Pérez Bernal, Francisco; Fernández, J. M. (Elsevier, 2012-10)
The vibrational Raman spectrum of CO2 is calculated by means of the alge- braic model U(2) × U(3) × U(2). The Hamiltonian and the molecular polariz- ability tensor operators are expanded in terms of symmetry coordinates, ... -
Symmetry projection of the rovibrational functions of methane
Álvarez Bajo, Osiris; Lemus, R.; Carvajal Zaera, Miguel; Pérez Bernal, Francisco (American Institute of Physics, 2010)
In this work we propose a symmetry projection approach to build a rovibrational basis for methane. In our method, symmetry adapted functions are obtained by simultaneous diagonalization of a set of commuting operators, ... -
The vibronically-resolved emission spectrum of disulfur monoxide S2O : an algebraic calculation and quantitative interpretation of Franck–Condon transition intensities
Müller, T.; Vaccaro, P. H.; Pérez Bernal, Francisco; Iachello, F. (American Institute of Physics, 1999)
Emission spectra obtained from jet-cooled disulfur monoxide (S2O) molecules have been interpreted by means of a novel Lie algebraic formalism that makes possible the facile evaluation of multidimensional Franck–Condon ... -
α particle particle production in the scattering of He-6 by Pb-208 at energies around the Coulomb barrier
Rusek, K.; Escrig, Diego; Sánchez Benítez, Ángel Miguel; Moro, A. M.; González Álvarez, Marcos A.; Andrés, M. V.; Angulo, C.; García Borge, María José; Cabrera Caño, Jesús; Cherubini, S.; Damaret, P.; Espino, José Manuel; Figuera, P.; Freer, M.; García Ramos, José Enrique; Gómez Camacho, Joaquín; Gulino, Marisa; Kakuee, O. R.; Martel Bravo, Ismael; Metelko, C.; Pérez Bernal, Francisco; Rahighi, J.; Rusek, K.; Smirnov, D.; Tengblad, Olof; Ziman, V. (Elsevier, 2007-08-01)
New experimental data from the scattering of 6He + 208Pb at energies around and below the Coulomb barrier are presented. The yield of breakup products coming from projectile fragmentation is dominated by a strong group of ...
