Verstichel, Brecht Poelmans, Ward De Baerdemacker, Stijn Wouters, Sebastian Van Neck, Dimitri
Published in
The European Physical Journal B
The reduced density matrix is variationally optimized for the two-dimensional Hubbard model. Exploiting all symmetries present in the system, we have been able to study 6 × 6 lattices at various fillings and different values for the on-site repulsion, using the highly accurate but computationally expensive three-index conditions. To reduce the comp...
Ourabah, Kamel Tribeche, Mouloud
Published in
Annals of Physics
•Thomas–Fermi approach for self-gravitating fermions.•A generalized Thomas–Fermi equation is derived.•Nonextensivity preserves a scaling property of this equation.•Nonextensive approach to Jeans’ instability of self-gravitating fermions.•It is found that nonextensivity makes the Fermionic system unstable at shorter scales.
Zhang, Zhen-Lu Huang, Yong-Chang
Published in
Annals of Physics
•We decompose the general gauge potential into two orthogonal parts according to general field theory.•We identify a new approach for quantizing the general singular QED system.•The results obtained are superior to those for the Lorentz gauge condition.•The theory presented solves dilemmas such as the nucleon spin crisis.
Arima, Takashi Ruggeri, Tommaso Sugiyama, Masaru Taniguchi, Shigeru
Published in
Meccanica
We study the six-field model of fluids (ET6) derived from extended thermodynamics. The six fields are the mass density, the velocity, the temperature, and the dynamic pressure (nonequilibrium pressure). We present the basic system of field equations of ET6. And we elucidate its characteristic features through the studies of the singular limit from ...
Dobrowolski, T.
Published in
Annals of Physics
The complex scalar field models which possess, in the spectra of solutions, the vortices with cylindrical symmetry are considered. The rigorous construction of the curved, constant width, vortices is presented. In the framework of the used formalism an example of the curved vortex of constant width is discussed in detail.
Hamzavi, Majid Ikhdair, Sameer M. Falaye, Babatunde J.
Published in
Annals of Physics
•Effect of the external fields on the energy levels of Dirac particle with the anharmonic oscillator is investigated.•The solutions are discussed in view of spin and pseudospin symmetries limits.•The energy levels and wave function are presented by the Nikiforov–Uvarov method.
Capri, M.A.L. Guimaraes, M.S. Lemes, V.E.R. Sorella, S.P. Tedesco, D.G.
Published in
Annals of Physics
•We study the zero modes of the Faddeev–Popov operator in the maximal Abelian gauge.•For d=2 we obtain solutions with finite action but not finite Hilbert norm.•For d=3,4 we obtain solutions with finite action and finite Hilbert norm.•These results can be compared with those previously obtained in the Landau gauge.
Teh, Rosy Ng, Ban-Loong Wong, Khai-Ming
Published in
Annals of Physics
•This one-half monopole can co-exist with a ’t Hooft–Polyakov monopole.•The magnetic charge of the one-half monopole and one monopole is of opposite sign.•This solution is non-BPS.•The net magnetic charge of the configuration is zero.•This solution upon Cho decomposition is only singular along the negative z-axis.
Lebiedowicz, Piotr Nachtmann, Otto Szczurek, Antoni
Published in
Annals of Physics
We discuss consequences of the models of “tensorial pomeron” and “vectorial pomeron” for exclusive diffractive production of scalar and pseudoscalar mesons in proton–proton collisions. Diffractive production of f0(980), f0(1370), f0(1500), η, and η′(958) mesons is discussed. Different pomeron–pomeron–meson tensorial coupling structures are possible...
Bergeron, H. Gazeau, J.P.
Published in
Annals of Physics
•Original approach to quantization based on (positive) operator-valued measures.•Includes Berezin–Klauder–Toeplitz and Weyl–Wigner quantizations.•Infinitely many such quantizations produce canonical commutation rule.•Set of objects to be quantized is enlarged in order to include singular functions or distributions.•Are given illuminating examples l...
