Anisotropic strange quark stars with a non-linear equation-of-stateThe European Physical Journal Plus - Tập 134 - Trang 1-8 - 2019
Ilídio Lopes, Grigoris Panotopoulos, Ángel Rincón
We obtain an exact analytical solution to Einstein’s field equations assuming a non-linear equation-of-state and a particular mass function. Our solution describes the interior of anisotropic color flavor locked strange quark stars. All energy conditions are fulfilled, and therefore the solution obtained here is a realistic solution within General Relativity. The mass-to-radius profile is obtained...... hiện toàn bộ
An insider view of the Portuguese ion beam laboratoryThe European Physical Journal Plus - Tập 136 - Trang 1-18 - 2021
E. Alves, K. Lorenz, N. Catarino, M. Peres, M. Dias, R. Mateus, L. C. Alves, V. Corregidor, N. P. Barradas, M. Fonseca, J. Cruz, A. Jesus
Accelerators are behind many major scientific and technological breakthroughs giving a gigantic contribution to unveil the mysteries of matter. This quest continues nowadays using the high-energy machines operating at large research centres like CERN, GANIL and FAIR, among others. Meanwhile most of the small and medium size accelerators running in laboratories located in universities and research ...... hiện toàn bộ
Hawking–Page phase transition of Reissner–Nordström–de Sitter space-timeThe European Physical Journal Plus - Tập 137 - Trang 1-9 - 2022
Hai-Long Zhen, Yun-Zhi Du, Huai-Fan Li, Li-Chun Zhang, Yu-Bo Ma
Considering the correlation between the black hole and cosmological horizons and regarding the Reissner–Nordström–de Sitter (RN–dS) space-time as a thermodynamic system, we discuss the thermodynamic properties of the RN–dS space-time. The behavior of the thermodynamic quantities as the functions x, which is the ratio of the black hole horizon radius to the cosmological horizon radius, is investiga...... hiện toàn bộ
Model of boson and fermion particle massesThe European Physical Journal Plus - Tập 136 - Trang 1-12 - 2021
J. W. Moffat
The boson and fermion particle masses are calculated in a finite quantum field theory. The field theory satisfies Poincaré invariance, unitarity and microscopic causality, and all loop graphs are finite to all orders of perturbation theory. The infinite derivative nonlocal field interactions are regularized with a mass (length) scale parameter
...... hiện toàn bộ
Jahn–Teller coupling to moiré phonons in the continuum model formalism for small-angle twisted bilayer grapheneThe European Physical Journal Plus - Tập 135 Số 8 - 2020
Mattia Angeli, Michele Fabrizio
AbstractWe show how to include the Jahn–Teller coupling of moiré phonons to the electrons in the continuum model formalism which describes small-angle twisted bilayer graphene. These phonons, which strongly couple to the valley degree of freedom, are able to open gaps at most integer fillings of the four flat bands around the charge neutrality point. Moreover, we d...... hiện toàn bộ
Magnetic dipole moment of the $$Z_{cs}(3985)$$ state: diquark–antidiquark and molecular picturesThe European Physical Journal Plus - Tập 136 - Trang 1-13 - 2021
U. Özdem, K. Azizi
We calculate the magnetic dipole moment of the newly observed charged hidden-charmed open strange
$$ Z_{cs}(3985)^- $$
state, recently observed by BESIII Collaboration. Based on the information provided by the experiment and theoretical studies followed the observation, we assign the quantum numbe...... hiện toàn bộ