EFFECTIVE INTERACTIONS AND THE EXCITATION OF GIANT RESONANCES

1984 ◽  
Vol 45 (C4) ◽  
pp. C4-231-C4-249
Author(s):  
W. G. Love ◽  
M. A. Franey
Keyword(s):  
Giant Resonances ◽  
Effective Interactions

scholarly journals A microscopic model beyond mean-field: from giant resonances properties to the fit of new effective interactions

2014 ◽  
Vol 66 ◽  
pp. 02015
Author(s):  
M. Brenna ◽  
G. Colò ◽  
X. Roca-Maza ◽  
P. F. Bortignon ◽  
K. Moghrabi ◽  
...  
Keyword(s):  
Mean Field ◽  
Microscopic Model ◽  
Giant Resonances ◽  
Effective Interactions

scholarly journals Microscopic description of large amplitude collective motion in the nuclear astrophysics context

2015 ◽  
Vol 24 (09) ◽  
pp. 1541005 ◽  
Author(s):  
Denis Lacroix ◽  
Yusuke Tanimura ◽  
Guillaume Scamps ◽  
Cédric Simenel
Keyword(s):  
Large Amplitude ◽  
Density Functional ◽  
Collective Motion ◽  
Three Dimensional ◽  
Nuclear Astrophysics ◽  
Giant Resonances ◽  
Unified Framework ◽  
Energy Density Functional ◽  
Effective Interactions ◽  
Fusion Transfer

In the last 10 years, we have observed an important increase of interest in the application of time-dependent energy density functional (TD-EDF) theory. This approach allows to treat nuclear structure and nuclear reaction from small to large amplitude dynamics in a unified framework. The possibility to perform unrestricted three-dimensional simulations using state-of-the-art effective interactions has opened new perspectives. In the present paper, an overview of applications where the predictive power of TD-EDF has been benchmarked is given. A special emphasize is made on processes that are of astrophysical interest. Illustrations discussed here include giant resonances, fission, binary and ternary collisions leading to fusion, transfer and deep inelastic processes.

GIANT RESONANCES IN HEAVY ION COLLISIONS

1984 ◽  
Vol 45 (C6) ◽  
pp. C6-269-C6-279
Author(s):  
A. Bonaccorso ◽  
M. Di Toro ◽  
U. Lombardo ◽  
G. Russo
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Giant Resonances ◽  
Ion Collisions

GIANT RESONANCES IN A POTENTIAL WELL : A SEMICLASSICAL DESCRIPTION

1987 ◽  
Vol 48 (C2) ◽  
pp. C2-19-C2-26
Author(s):  
X. VIÑAS ◽  
A. GUIRAO
Keyword(s):  
Potential Well ◽  
Giant Resonances

GIANT RESONANCES BUILT ON HIGHLY EXCITED STATES

1984 ◽  
Vol 45 (C4) ◽  
pp. C4-337-C4-350 ◽  
Author(s):  
K. A. Snover
Keyword(s):  
Excited States ◽  
Giant Resonances

ISOSPIN STRUCTURE OF GIANT RESONANCES

1984 ◽  
Vol 45 (C4) ◽  
pp. C4-319-C4-326 ◽  
Author(s):  
R. Leonardi
Keyword(s):  
Giant Resonances

Effective Interactions Approach to Phase Stability in Alloys Under Irradiation

1998 ◽  
Vol 538 ◽  
Author(s):  
Raúl A. Enrique ◽  
Pascal Bellon
Keyword(s):  
Phase Diagram ◽  
Phase Stability ◽  
Kinetic Monte Carlo ◽  
Theoretical Frameworks ◽  
Effective Interactions ◽  
Dynamical Phase ◽  
Thermodynamic Potentials ◽  
Simple Kinetic Model ◽  
Kinetic Monte Carlo Simulations ◽  
Competing Dynamics

AbstractPhase stability in alloys under irradiation is studied considering effective thermodynamic potentials. A simple kinetic model of a binary alloy with phase separation is investigated. Time evolution in the alloy results from two competing dynamics: thermal diffusion, and irradiation induced ballistic exchanges. The dynamical (steady state) phase diagram is evaluated exactly performing Kinetic Monte Carlo simulations. The solution is then compared to two theoretical frameworks: the effective quasi-interactions model as proposed by Vaks and Kamishenko, and the effective free energy model as proposed by Martin. New developments of these models are proposed to allow for quantitative comparisons. Both theoretical frameworks yield fairly good approximations to the dynamical phase diagram.

scholarly journals Effective Interactions of Relativistic Composite Particles in Unified Nonlinear Spinor-Field Models. I

1985 ◽  
Vol 40 (1) ◽  
pp. 14-28
Author(s):  
H. Stumpf
Keyword(s):  
Spinor Field ◽  
Bound States ◽  
Composite Particle ◽  
Composite Particles ◽  
Statistical Interpretation ◽  
Particle Spectrum ◽  
Nonlinear Spinor ◽  
Effective Interactions ◽  
Scattering States ◽  
Diagonal Part

Unified nonlinear spinor field models are selfregularizing quantum field theories in which all observable (elementary and non-elementary) particles are assumed to be bound states of fermionic preon fields. Due to their large masses the preons themselves are confined. In preceding papers a functional energy representation, the statistical interpretation and the dynamical equations were derived. In this paper the dynamics of composite particles is discussed. The composite particles are defined to be eigensolutions of the diagonal part of the energy representation. Corresponding calculations are in preparation, but in the present paper a suitable composite particle spectrum is assumed. It consists of preon-antipreon boson states and threepreon- fermion states with corresponding antifermions and contains bound states as well as preon scattering states. The state functional is expanded in terms of these composite particle states with inclusion of preon scattering states. The transformation of the functional energy representation of the spinor field into composite particle functional operators produces a hierarchy of effective interactions at the composite particle level, the leading terms of which are identical with the functional energy representation of a phenomenological boson-fermion coupling theory. This representation is valid as long as the processes are assumed to be below the energetic threshold for preon production or preon break-up reactions, respectively. From this it can be concluded that below the threshold the effective interactions of composite particles in a unified spinor field model lead to phenomenological coupling theories which depend in their properties on the bound state spectrum of the self-regularizing spinor theory.

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