Browsing DFA  Artículos by Issue Date
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Vapor–liquid and liquid–liquid phase equilibria of mixtures containing square‐well molecules by Gibbs ensemble Monte Carlo simulation
(American Institute of Physics, 2008)Gibbs ensemble Monte Carlo simulations are undertaken in order to determine the vapor–liquid and liquid–liquid phase equilibria for mixtures containing square‐well particles. Two types of binary systems are examined, namely, ... 
Nuclear binding energies : global collective structure and local shellmodel correlations
(Elsevier, 20080128)Nuclear binding energies and twoneutron separation energies are analysed starting from the liquiddrop model and the nuclear shell model in order to describe the global trends of the above observables. We subsequently ... 
Study of the elastic scattering of 6He on 208Pb at energies around the Coulomb barrier
(Elsevier, 20080415)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 ... 
Ab initio potential energy surface, electric dipole moment, polarizability tensor, and theoretical rovibrational spectra in the electronic ground state of 14NH3
(Elsevier, 200805)We report the calculation of a sixdimensional CCSD(T)/augccpVQZ potential energy surface for the electronic ground state of NH+3 together with the corresponding CCSD(T)/augccpVTZ dipole moment and polarizability ... 
Protonproton correlations observed in twoproton decay of (19)Mg and (16)Ne
(American Physical Society, 200806)Protonproton correlations were observed for the twoproton decays of the ground states of 19Mg and 16Ne. The trajectories of the respective decay products, 17Ne+p+p and 14O+p+p, were mea sured by using a tracking ... 
Vibrational energies of PH3 calculated variationally at the complete basis set limit
(American Institute of Physics, 200807)The potential energy surface for the electronic ground state of PH3 was calculated at the CCSD(T) level using augccpV(Q+d)Z and augccpVQZ basis sets for P and H, respectively, with scalar relativistic corrections ... 
Detection of vibrationally excited methyl formate in W51 e2
(EDP Sciences, 200810)Hot cores in molecular clouds, such as Orion KL, Sgr B2, W51 e1/e2, are characterized by the presence of molecules at temperature high enough to significantly populate their lowfrequency vibrationally excited states. For ... 
Decoherence as a signature of an excited state quantum phase transition
(American Physical Society, 20081216)We analyze the decoherence induced on a single qubit by the interaction with a twolevel boson system with critical internal dynamics. We explore how the decoherence process is affected by the presence of quantum phase ... 
Analytical transformed harmonic oscillator basis for continuum discretized coupled channels calculations
(American Physical Society, 2009)A new method for continuum discretization in continuumdiscretized coupledchannels calculations is proposed. The method is based on an analytic localscale transformation of the harmonicoscillatorwave functions proposed ... 
A novel connection between algebraic spectroscopic parameters and force constants in the description of vibrational excitations of linear triatomic molecules
(Elsevier, 200901)A connection between an algebraic approach to the dynamics of triatomic molecules based on the U(2)×U(3)×U(2) Lie algebra and the traditional description in configuration space is presented. The connection is established ... 
Partial dynamical symmetry in quantum Hamiltonians with higherorder terms
(American Physical Society, 20090320)A generic procedure is proposed to construct manybody quantum Hamiltonians with partial dynamical symmetry. It is based on a tensor decomposition of the Hamiltonian and allows the construction of a hierarchy of interactions ... 
The Pt isotopes : comparing the Interacting Boson Model with Configuration Mixing and the Extended ConsistentQ formalism
(Elsevier, 20090415)The role of intruder configurations in the description of energy spectra and B(E2) values in the Pt region is analyzed. In particular, we study the differences between Interacting Boson Model calculations with or without ... 
Observation of narrow states in nuclei beyond the proton drip line: (15)F and (16)Ne
(American Physical Society, 200906)Two highlying states in 15F and 16Ne, unbound with respect to oneproton (1p) and twoproton (2p) emissions, have been observed in fragmentation of 17Ne at intermediate energies. They undergo mainly sequential emissions ... 
Rotational spectrum of 13C2methyl formate (HCOO13CH3) and detection of the two 13Cmethyl formate in Orion
(EDP Sciences, 200906)Laboratory measurements and analysis of the microwave and millimeterwave spectra of potential interstellar molecules are a prerequisite for their subsequent identification by radioastronomical techniques. The spectral ... 
Decoherence due to an excited state quantum phase transition in a twolevel boson model
(American Physical Society, 20090917)The decoherence induced on a single qubit by its interaction with the environment is studied. The environment is modeled as a scalar twolevel boson system that can go through either firstorder or continuousexcitedstate ... 
Anharmonicity effects in the bosonic U(2)SO(3) excitedstate quantum phase transition
(American Physical Society, 2010)We study the effect of the inclusion of the U(2) Lie algebra secondorder Casimir operator in a model Hamiltonian of the vibron model twodimensional limit. We extend previously published results, showing that the inclusion ... 
Rotational spectrum and tentative detection of DCOOCH3–Methyl formate in Orion
(American Astronomical Society, 2010)New centimeterwave (7–80 GHz) and submillimeterwave (580–661 GHz) spectra of a deuterated species of methyl formate (DCOOCH3) have been measured. Transitions with a maximum value of J = 64 and K = 36 have been assigned ... 
Communications : evidence for the role of fluctuations in the thermodynamics of nanoscale drops and the implications in computations of the surface tension
(American Institute of Physics, 2010)Testarea deformations are used to analyze vaporliquid interfaces of LennardJones particles by molecular dynamics simulation. For planar vaporliquid interfaces the change in free energy is captured by the average of ... 
Symmetry projection of the rovibrational functions of methane
(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, ... 
A theoreticalspectroscopy, abinitiobased study of the electronic ground state of 121SbH3
(Elsevier, 2010)For the stibine isotopologue (SbH3)Sb121, we report improved theoretical calculations of the vibrational energies below 8000 cm and simulations of the rovibrational spectrum in the 08000 cm(1) region. The calculations ...