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Now showing items 61-80 of 280
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Vapor-liquid interfacial properties of fully flexible Lennard-Jones chains
Jiménez Blas, Felipe
; MacDowell, Luis G.; Miguel Agustino, Enrique de; Jackson, George (AIP Publishing, 2008)
We consider the computation of the interfacial properties of molecular chains from direct simulation of the vapor-liquid interface. The molecules are modeled as fully flexible chains formed from tangentially bonded ... -
Nuclear binding energies : global collective structure and local shell-model correlations
Fossion, R.; De Coster, C.; García Ramos, José Enrique; Werner, T.; Heyde, K. (Elsevier, 2008-01-28)
Nuclear binding energies and two-neutron separation energies are analysed starting from the liquid-drop 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
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 ... -
Ab initio potential energy surface, electric dipole moment, polarizability tensor, and theoretical rovibrational spectra in the electronic ground state of 14NH3
Yurchenko, Sergei N.; Thiel, Walter; Carvajal Zaera, Miguel; Jensen, Per (Elsevier, 2008-05)
We report the calculation of a six-dimensional CCSD(T)/aug-cc-pVQZ potential energy surface for the electronic ground state of NH+3 together with the corresponding CCSD(T)/aug-cc-pVTZ dipole moment and polarizability ... -
Proton-proton correlations observed in two-proton decay of (19)Mg and (16)Ne
Mukha, I.; Grigorenko, L.; Acosta Sánchez, Luis Armando; Álvarez, M. A. G.; Casarejos, E.; Chatillón, A.; Cortina Gil, D.; Espino, José Manuel; Fomichev, A.; García Ramos, José Enrique; Geissel, H.; Gómez Camacho, Joaquín; Hofmann, J.; Kiselev, O. (American Physical Society, 2008-06)
Proton-proton correlations were observed for the two-proton 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 ... -
On the IR behaviour of the Landau-gauge ghost propagator
Boucaud, Ph.; Leroy, J. P.; Le Yaouanc, Alain; Micheli, J.; Pène, O.; Rodríguez Quintero, José (Springer Verlag, 2008-06)
We examine analytically the ghost propagator Dyson-Schwinger Equation (DSE) in the deep IR regime and prove that a finite ghost dressing function at vanish- ing momentum is an alternative solution (solution II) to the ... -
IR finiteness of the ghost dressing function from numerical resolution of the ghost SD equation
Boucaud, Ph.; Leroy, J. P.; Le Yaouanc, Alain; Micheli, J.; Pène, O.; Rodríguez Quintero, José (Springer Verlag, 2008-06)
We solve numerically the Schwinger-Dyson ghost equation in the Landau gauge for a given, finite at k = 0 gluon propagator (i.e. the infrared exponent of its dressing function, αgluon, is 1) and under the usual assumption ... -
Vibrational energies of PH3 calculated variationally at the complete basis set limit
Ovsyannikov, Roman I.; Thiel, Walter; Yurchenko, Sergei N.; Carvajal Zaera, Miguel; Jensen, Per (American Institute of Physics, 2008-07)
The potential energy surface for the electronic ground state of PH3 was calculated at the CCSD(T) level using aug-cc-pV(Q+d)Z and aug-cc-pVQZ basis sets for P and H, respectively, with scalar relativistic corrections ... -
Detection of vibrationally excited methyl formate in W51 e2
Demyk, K.; Wlodarczak, G.; Carvajal Zaera, Miguel (EDP Sciences, 2008-10)
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 low-frequency vibrationally excited states. For ... -
Decoherence as a signature of an excited state quantum phase transition
Relaño Pérez, Armando; Arias Carrasco, José Miguel; Dukelsky, J.; García Ramos, José Enrique; Pérez Fernández, Pedro (American Physical Society, 2008-12-16)
We analyze the decoherence induced on a single qubit by the interaction with a two-level 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
Moro, A. M.; Arias Carrasco, José Miguel; Gómez Camacho, Joaquín; Pérez Bernal, Francisco (American Physical Society, 2009)
A new method for continuum discretization in continuum-discretized coupled-channels calculations is proposed. The method is based on an analytic local-scale transformation of the harmonic-oscillatorwave functions proposed ... -
Application of the generalised SAFT-VR approach for long-ranged square-well potentials to model the phase behaviour of real fluids
dos Ramos, María Carolina; Docherty, Hugh; Jiménez Blas, Felipe; Galindo, Amparo (Elsevier, 2009)
In a recent generalisation of the SAFT-VR equation of state the method was extended so as to deal with wide square-well ranges, namely, 1.2 ≤ λ ≤ 3.0 [B. H. Patel, H. Docherty, S. Varga, A. Galindo, and G. C. Maitland. ... -
Surface tension of fully flexible Lennard-Jones chains: Role of long-range corrections
González MacDowell, Luis; Jiménez Blas, Felipe (AIP Publishing, 2009)
We have calculated the interfacial properties of fully flexible chains formed from tangentially bonded Lennard-Jones beads by direct coexistence. The full long-range tails of the potential are accounted for by means of ... -
A novel connection between algebraic spectroscopic parameters and force constants in the description of vibrational excitations of linear triatomic molecules
Sánchez Castellanos, M.; Lemus, R.; Carvajal Zaera, Miguel; Pérez Bernal, Francisco (Elsevier, 2009-01)
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 higher-order terms
García Ramos, José Enrique; Leviatan, A.; Van Isacker, P. (American Physical Society, 2009-03-20)
A generic procedure is proposed to construct many-body 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 Consistent-Q formalism
García Ramos, José Enrique; Heyde, K. (Elsevier, 2009-04-15)
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 ... -
Rotational spectrum of 13C2-methyl formate (HCOO13CH3) and detection of the two 13C-methyl formate in Orion
Kleiner, I.; Carvajal Zaera, Miguel; Margulès, L.; Tercero, B.; Demyk, K.; Guillemin, J. C.; Lattanzi, V.; Walters, A.; Demaison, J.; Wlodarczak, G.; Huet, Thérèse R.; Møllendal, H.; Ilyushin, V. V.; Cernicharo, J. (EDP Sciences, 2009-06)
Laboratory measurements and analysis of the microwave and millimeter-wave spectra of potential interstellar molecules are a prerequisite for their subsequent identification by radioastronomical techniques. The spectral ... -
Observation of narrow states in nuclei beyond the proton drip line: (15)F and (16)Ne
Mukha, I.; Timofeyuk, N.K.; Sümmerer, K.; Acosta Sánchez, Luis Armando; Álvarez, M. A. G.; García Ramos, José Enrique (American Physical Society, 2009-06)
Two high-lying states in 15F and 16Ne, unbound with respect to one-proton (1p) and two-proton (2p) emissions, have been observed in fragmentation of 17Ne at intermediate energies. They undergo mainly sequential emissions ... -
Decoherence due to an excited state quantum phase transition in a two-level boson model
Pérez Fernández, Pedro; Relaño Pérez, Armando; Arias Carrasco, José Miguel; Dukelsky, J.; García Ramos, José Enrique (American Physical Society, 2009-09-17)
The decoherence induced on a single qubit by its interaction with the environment is studied. The environment is modeled as a scalar two-level boson system that can go through either first-order or continuous-excited-state ... -
Communications : evidence for the role of fluctuations in the thermodynamics of nanoscale drops and the implications in computations of the surface tension
Sampayo, José G.; Malijevský, Alexandr; Müller, Erich A.; Miguel Agustino, Enrique de; Jackson, George (American Institute of Physics, 2010)
Test-area deformations are used to analyze vapor-liquid interfaces of Lennard-Jones particles by molecular dynamics simulation. For planar vapor-liquid interfaces the change in free energy is captured by the average of ...
