Zobrazeno 1 - 10
of 158
pro vyhledávání: '"João da Providência"'
Publikováno v:
Electronic Research Archive, Vol 30, Iss 5, Pp 1864-1880 (2022)
In this note, we approximate the von Neumann and Rényi entropies of high-dimensional graphs using the Euler-Maclaurin summation formula. The obtained estimations have a considerable degree of accuracy. The performed experiments suggest some entropy
Externí odkaz:
https://doaj.org/article/67adbf2acf1d49bba2f6d1315e3c391e
Publikováno v:
Symmetry, Integrability and Geometry: Methods and Applications, Vol 5, p 009 (2009)
The maximally-decoupled method has been considered as a theory to apply an basic idea of an integrability condition to certain multiple parametrized symmetries. The method is regarded as a mathematical tool to describe a symmetry of a collective subm
Externí odkaz:
https://doaj.org/article/3df893f4d63b48ee93d1092e57b0d5b2
Publikováno v:
Symmetry, Integrability and Geometry: Methods and Applications, Vol 4, p 024 (2008)
It is shown how the strong interaction dynamics of a multi-quark Lagrangian affects the catalysis of dynamical symmetry breaking by a constant magnetic field in (3+1) dimensions. Attention is drawn to the local minima structure of the theory.
Externí odkaz:
https://doaj.org/article/454448bffeeb4499bff4b79755344ddd
In this volume, the main results of the last sixty years of research in nuclear fission are summarized, showing how ideas advanced from the beginning, for nuclei have also found useful applications in the new area of atomic clusters. The present stat
Concerning the su(2)-Lipkin model, the calculation of the excitation energy to the 1st excited-state gives rise to the following fact: The two results based on the exact treatment and the conventional random phase approximation (RPA) are in unexpecte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b15766d8a03cbebe03db8e77deec699c
http://arxiv.org/abs/2203.12820
http://arxiv.org/abs/2203.12820
The higher rank numerical ranges of generic matrices are described in terms of the components of their Kippenhahn curves. Cases of tridiagonal (in particular, reciprocal) 2-periodic matrices are treated in more detail.
Comment: 14 pages, 10 figu
Comment: 14 pages, 10 figu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0bb65ceaee1d5fa1f10096cbb2609756
http://arxiv.org/abs/2104.07893
http://arxiv.org/abs/2104.07893
Publikováno v:
Rabhi, A, Providência, C, Moszkowski, S A, Da Providência, J & Bohr, H 2021, ' Neutron stars within the Bogoliubov quark-meson coupling model ', Physical Review C, vol. 103, no. 3, 035811 . https://doi.org/10.1103/PhysRevC.103.035811
A quark-meson coupling model based on the quark model proposed by Bogoliubov for the description of the quark dynamics is developed and applied to the description of neutron stars. Starting from a su(3) symmetry approach, it is shown that this symmet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c8ce803a23eaef79e7485b606450269
https://orbit.dtu.dk/en/publications/ce77e1a0-2e01-4f3f-8fe9-9e1f266e0a0f
https://orbit.dtu.dk/en/publications/ce77e1a0-2e01-4f3f-8fe9-9e1f266e0a0f
Autor:
Masatoshi Morimoto, Yasuhiko Tsue, João da Providência, Masatoshi Yamamura, Constança Providência
To obtain the equation of state of quark matter and construct hybrid stars, we calculate the thermodynamic potential in the three-flavor Nambu-Jona-Lasinio model including the tensor-type four-point interaction and the Kobayashi-Maskawa-'t Hooft inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45127e211912d11d2580fe1ef543730e
Autor:
Constança Providência, Masatoshi Morimoto, Masatoshi Yamamura, Yasuhiko Tsue, Ai Kagawa, João da Providência
The possible formation of tensor condensates originated from a tensor-type interaction between quarks is investigated in the three-flavor Nambu-Jona-Lasinio model including the Kobayashi-Maskawa-'t Hooft interaction, which leads to flavor mixing. It
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::15bb69f939f85b81647ce0ac8075511b
Publikováno v:
The Electronic Journal of Linear Algebra. 33:63-73
A theory of thermodynamics has been recently formulated and derived on the basis of R\'enyi entropy and its relative versions. In this framework, the concepts of partition function, internal energy and free energy are defined, and fundamental quantum
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eeb6db95e456a93797fdd970f54fc2af
https://doi.org/10.13001/1081-3810.3665
https://doi.org/10.13001/1081-3810.3665