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of 955
pro vyhledávání: '"Stevenson P. D."'
This work presents a computer program that performs symmetry-unrestricted 3D nuclear time-dependent density function theory (DFT) calculations. The program features the augmented Lagrangian constraint in the static calculation. This allows for the ca
Externí odkaz:
http://arxiv.org/abs/2403.12539
The isoscalar giant monopole resonance in molybdenum-100 has been measured in recent alpha scattering experiments and its strength function extracted. By performing time-dependent Hartree-Fock calculations with Skyrme effective interactions, we are a
Externí odkaz:
http://arxiv.org/abs/2310.00021
Autor:
Stevenson P. D.
Publikováno v:
EPJ Web of Conferences, Vol 232, p 03005 (2020)
The surface energy is one of the fundamental properties of nuclei, appearing in the simplest form of the semi-empirical mass formula. The surface energy has an influence on e.g. the shape of a nucleus and its ability to deform. This in turn could be
Externí odkaz:
https://doaj.org/article/7ba6539670134001b7e187083e3d1a15
Model calculations of nuclear properties are peformed using quantum computing algorithms on simulated and real quantum computers. The models are a realistic calculation of deuteron binding based on effective field theory, and a simplified two-level v
Externí odkaz:
http://arxiv.org/abs/2205.05576
Autor:
Stevenson P. D.
Publikováno v:
EPJ Web of Conferences, Vol 107, p 08001 (2016)
The time-dependent version of nuclear density functional theory, using functionals derived from Skyrme interactions, is able to approximately describe nuclear dynamics. We present time-dependent results of calculations of dipole resonances, concentra
Externí odkaz:
https://doaj.org/article/07baffe124d944da911fba884754bf86
We present a code in Python3 which takes a square real symmetric matrix, of arbitrary size, and decomposes it as a tensor product of Pauli spin matrices. The application to the decomposition of a Hamiltonian of relevance to nuclear physics for implem
Externí odkaz:
http://arxiv.org/abs/2111.00627
Publikováno v:
EPJ Web of Conferences, Vol 86, p 00058 (2015)
We make use of the Skyrme effective nuclear interaction within the time-dependent Hartree-Fock framework to assess the effect of inclusion of the tensor terms of the Skyrme interaction on the fusion window of the 16O–16O reaction. We find that the
Externí odkaz:
https://doaj.org/article/3dd47e91a24343c0bcba8d7820b57bb3
Autor:
Bhuyan, M., Maheshwari, B., Kassim, H. A., Yusof, N., Patra, S. K., Carlson, B. V., Stevenson, P. D.
We revisit the studies of the isotopic shift in the charge radii of {\it even-even} isotopes of Sn and Pb nuclei at $N$ = 82, and 126, respectively, within the relativistic mean-field and Relativistic-Hartree-Bogoliubov approach. The shell model is a
Externí odkaz:
http://arxiv.org/abs/2104.07392
Autor:
Stevenson P. D., Pardi C. I.
Publikováno v:
EPJ Web of Conferences, Vol 66, p 02099 (2014)
We motivate and summarise some recent results in the application of formally exact boundary conditions in nuclear time-dependent Hartree-Fock calculations, making use of Laplace transformations to calculate the values of the wave functions at the bou
Externí odkaz:
https://doaj.org/article/ce94feaaefef41c0bb2f02a39dd13653
Publikováno v:
Phys. Rev. C 103, 064304 (2021)
Background: Time-dependent techniques in nuclear theory often rely on mean-field or Hartree-Fock descriptions. Beyond mean-field dynamical calculations within the time-dependent density matrix (TDDM) theory have often invoked symmetry restrictions an
Externí odkaz:
http://arxiv.org/abs/2101.07584