Zobrazeno 1 - 10
of 1 438
pro vyhledávání: '"dynamical symmetry"'
Publikováno v:
Theor. Math. Phys.,207, No. 3, 751--769, 2021
Integrals of motion are constructed from noncommutative (NC) Kepler dynamics, generating $SO(3),$ $SO(4),$ and $SO(1,3)$ dynamical symmetry groups. The Hamiltonian vector field is derived in action-angle coordinates, and the existence of a hierarchy
Externí odkaz:
http://arxiv.org/abs/2109.00611
Autor:
Maria Elovenkova, Alexander Pechen
Publikováno v:
Quantum Reports, Vol 5, Iss 3, Pp 526-545 (2023)
Quantum systems with dynamical symmetries have conserved quantities that are preserved under coherent control. Therefore, such systems cannot be completely controlled by means of only coherent control. In particular, for such systems, the maximum tra
Externí odkaz:
https://doaj.org/article/e37a253b4d534605aafdcf481b2423d3
Autor:
József Cseh, Gábor Riczu
Publikováno v:
Symmetry, Vol 15, Iss 12, p 2116 (2023)
We investigate how the moment of inertia of the atomic nucleus can be calculated in terms of the invariant operator of its SU(3) symmetry. This question is important for model Hamiltonians containing the moment of inertia explicitly, e.g., those with
Externí odkaz:
https://doaj.org/article/4948c41c13a54beb9ec2e2afc6130557
Akademický článek
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Autor:
Reinhard Alkofer
Publikováno v:
Symmetry, Vol 15, Iss 9, p 1787 (2023)
Dynamical chiral symmetry breaking (DχSB) in quantum chromo dynamics (QCD) for light quarks is an indispensable concept for understanding hadron physics, i.e., the spectrum and the structure of hadrons. In functional approaches to QCD, the respectiv
Externí odkaz:
https://doaj.org/article/419cacecc2f04d91829a3006bcb1aa4a
Autor:
Carimalo Christian
Publikováno v:
Theoretical and Applied Mechanics, Vol 49, Iss 1, Pp 61-69 (2022)
A new way of looking at symmetries is proposed, especially regarding their role in the stability of two-body motions in the Newtonian and the Hookean potentials, the two selected by Bertrand’s theorem. The role of the number of spatial dimensions i
Externí odkaz:
https://doaj.org/article/7848c683da184e4c80001515ab6abd9c
Autor:
Jean-Christophe Pain
Publikováno v:
Atoms, Vol 11, Iss 7, p 105 (2023)
In this non-exhaustive review, we discuss the importance of invariant vectors in atomic physics, such as the Laplace–Runge–Lenz vector, the Redmond vector in the presence of an electric field, the Landau–Avron–Sivardièrevector when the syste
Externí odkaz:
https://doaj.org/article/db247d94a4f34445ac017dc315eec5c5
Publikováno v:
مجله علوم و فنون هستهای, Vol 41, Iss 3, Pp 1-10 (2020)
In this paper, the spectral statistics of prolatedeformed nuclei are investigated by using random matrix theory. To this aim, we used both available experimental data and also the energy levels of ground, beta, and gamma bands of 51 deformed even-eve
Externí odkaz:
https://doaj.org/article/5cc53be3631a4d518e583ec3395003bd
Autor:
Sallama Sadiq Hummadi, Omar Ahmed M. Safauldeen, Amani Abdullah kumeel, Anaam Musa Hadee, Raghdaa Hameed Honi
Publikováno v:
Al-Mustansiriyah Journal of Science, Vol 31, Iss 1, Pp 71-75 (2020)
The nuclear structure for even-even nuclei estimated by using interacting boson model (IBM-1). Also this program was used to determine energy levels of g- state, energy ratios and electric quadrupole transitions probability B(E2) which have been calc
Externí odkaz:
https://doaj.org/article/36d54047c6654578bee5823eb3264648
Autor:
Roie Dann, Ronnie Kosloff
Publikováno v:
New Journal of Physics, Vol 25, Iss 4, p 043019 (2023)
Underlying the classical thermodynamic principles are analogous microscopic laws, arising from the fundamental axioms of quantum mechanics. These define quantum thermodynamic variables such as quantum work and heat and characterize the possible trans
Externí odkaz:
https://doaj.org/article/9ac97d87da1840afa60799787e46781f