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The out-of-equilibrium quantum dynamics of a Bose gas trapped in an asymmetric double well and interacting with a finite-range interaction has been studied in real space by solving the time-dependent many-body Schr\"odinger equation…

Quantum Gases · Physics 2019-05-21 Sudip Kumar Haldar , Ofir E Alon

We propose new effective inter-nucleon forces with a finite-range three-body operator. The proposed forces are suitable for describing the nuclear structure properties over a wide mass number region, including the saturation point of…

Nuclear Theory · Physics 2009-11-10 Y. Kanada-En'yo , Y. Akaishi

Radiation technologies have found wide application in power engineering, medicine, biology and other areas of human activities. However, theoretical calculations of nuclear reactions and, correspondingly, the interpretation of experimental…

Nuclear Experiment · Physics 2013-12-10 Yu. P. Lyakhno

The Unitary Correlation Operator Method (UCOM) is applied to realistic potentials. The effects of tensor correlations are investigated. The resulting phase shift equivalent correlated interactions are used in the no-core shell model for…

Nuclear Theory · Physics 2007-05-23 Thomas Neff , Hans Feldmeier

From the subsubleading chiral three-nucleon force [intermediate-range contributions, published in Phys. Rev. C\,87, 054007 (2013)] a density-dependent NN-interaction $V_\text{med}$ is derived in isospin-symmetric nuclear matter. Following…

Nuclear Theory · Physics 2021-02-01 N. Kaiser

Isospin equilibration in multi-fragmentation processes is studied for the system $^{40}Cl+^{28}Si$ at 40 MeV/nucleon. The investigation is performed through semiclassical microscopic many-body calculations based on the CoMD-II model. The…

Nuclear Theory · Physics 2008-01-29 M. Papa , G. Giuliani

Recently it has been discovered that the elliptic flow, v2, of composite charged particles emitted at midrapidity in Heavy-Ion collisions at intermediate energies shows the strongest sensitivity to the Nuclear Equation of State (EoS) which…

Nuclear Theory · Physics 2018-09-12 A. Le Fevre , Y. Leifels , C. Hartnack , J. Aichelin

We perform exact coupled-channels calculations, taking into account properly the effects of Coulomb coupling and the finite excitation energy of collective excitations in the colliding nuclei, for three Fm formation reactions, $^{37}$Cl +…

Nuclear Theory · Physics 2009-11-10 K. Hagino , N. Rowley , T. Ohtsuki , M. Dasgupta , J. O. Newton , D. J. Hinde

Properties of effective interactions in neutron-rich matter are reflected in the medium's equation of state (EOS), which is a relationship among several state variables. Spin and isospin asymmetries play an important role in the energy…

Nuclear Theory · Physics 2007-10-03 Plamen G. Krastev , Francesca Sammarruca , Bao-An Li , Aaron Worley

We study the beam energy dependence of equilibration process and space-time characteristics of participant and spectator matter. For this, we simulated the semi-central collisions of $^{40}Ca+ ^{40}Ca$ at incident energies of 400, 600 and…

Nuclear Theory · Physics 2011-12-05 Yogesh K. Vermani , Mandeep Kaur

The effective nucleon mass (M^*) plays a central role in Quantum Hadrodynamics-I (QHD-I), linking scalar meson interactions at the microscopic level to the macroscopic properties of dense nuclear matter. In this work, we re-derive the…

Nuclear Theory · Physics 2025-09-15 Ghitha Nadhira Azka Rahiemy , Eko Tri Sulistyani , Pekik Nurwantoro

Within the framework of an isospin-dependent quantum molecular dynamics model, the rotational flow in reactions of $^{58}$Fe + $^{58}$Fe and $^{58}$% Ni + $^{58}$Ni at 40 MeV/nucleon for different impact parameters is investigated by…

Nuclear Theory · Physics 2009-11-06 Lie-Wen Chen , Feng-Shou Zhang , Zhi-Yuan Zhu

Global macroscopic features observed in the fully-damped binary processes in light di-nuclear systems, such as limiting angular momenta, mean total kinetic energies and energy thresholds for fusion-fission processes (''fission thresholds")…

Nuclear Theory · Physics 2009-09-25 C. Beck , A. Szanto de Toledo

With the newly updated version of the ultrarelativistic quantum molecular dynamics (UrQMD) model, a systematic investigation of the effects of in-medium nucleon-nucleon ($NN$) elastic cross section on the collective flow and the stopping…

Nuclear Theory · Physics 2018-05-02 Pengcheng Li , Yongjia Wang , Qingfeng Li , Chenchen Guo , Hongfei Zhang

Constrained molecular dynamics(CoMD) model, previously introduced for nuclear dynamics, has been extended to the atomic structure and collision calculations. Quantum effects corresponding to the Pauli and Heisenberg principle are enforced…

Atomic Physics · Physics 2007-05-23 Sachie Kimura , Aldo Bonasera

Recent analyses of several isospin effects in heavy-ion reactions have allowed us to constrain the density dependence of nuclear symmetry energy at sub-saturation densities within a narrow range. Combined with constraints on the Equation of…

Nuclear Theory · Physics 2008-06-24 Bao-An Li , Lie-Wen Chen , Che Ming Ko , Plamen G. Krastev , Aaron Worley

We perform a systematic study of capture excitation functions by using an empirical coupled-channel model. In this model, a barrier distribution is used to take effectively into account the effects of couplings between the relative motion…

Nuclear Theory · Physics 2017-01-31 Bing Wang , Kai Wen , Wei-Juan Zhao , En-Guang Zhao , Shan-Gui Zhou

The detailed analysis of excitation function of elliptical flow by taking into account the nature of equation of state, nucleon-nucleon cross sections as well as momentum dependent interactions is performed within Quantum Molecular Dynamics…

Nuclear Theory · Physics 2011-12-30 Sanjeev Kumar , Rajeev Chugh

In the framework of mean-field based transport approaches, we discuss recent results concerning collective motion and low-energy heavy ion reactions involving neutron-rich systems. We focus on aspects which are particularly sensitive to the…

Nuclear Theory · Physics 2019-03-11 Stefano Burrello , Maria Colonna , Hua Zheng

We describe low-lying collective excitations of atomic nuclei with the multi-reference covariant density functional theory, and combine them with coupled-channels calculations for heavy-ion fusion reactions at energies around the Coulomb…

Nuclear Theory · Physics 2015-04-16 K. Hagino , J. M. Yao