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U (1) extension of the standard model from short-distance structure of spacetime
https://repo.scoap3.org/record/32584
In this paper, we presented a U(1) \documentclass[12pt]{minimal}
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\begin{document}$$\mathrm {U}(1)$$\end{document} extension of the SM and the corresponding consequences, based on a more fundamental structure of the spacetime. We started fundamentally from a generally covariant theory which includes a set of the fields propagating dynamically in the fundamental spacetime and respecting for the SM gauge group. We then derived, in the effective four-dimensional spacetime, an extension of the SM with the gauge group SU(3)C⊗SU(2)L⊗U(1)Y⊗U(1)X \documentclass[12pt]{minimal}
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\begin{document}$$\mathrm {SU}(3)_C\otimes \mathrm {SU}(2)_L\otimes \mathrm {U}(1)_Y\otimes \mathrm {U}(1)_X$$\end{document} . Due to the structure of the spacetime, the tiny observed neutrino masses are an unavoidable consequence in this scenario. Also, the phenomenology of the new neutral gauge boson is discussed in detail.Nam, Cao H.Sat, 04 May 2019 03:53:03 GMThttps://repo.scoap3.org/record/325842019-5-3Non-linear charged AdS black hole in massive gravity
https://repo.scoap3.org/record/29762
In the context of the non-linear electrodynamics and the Einstein-massive gravity, we have obtained a 4D non-linear charged AdS black hole solution. Then, we investigated its horizon structure. In addition, the thermodynamics and phase structure of this black hole solution have been studied in details. We have computed various thermodynamic quantities of the black hole, such as the temperature, entropy, the heat capacity at constant pressure, or the Gibbs free energy. The black hole can undergo the first-order, second-order phase transitions which depend crucially on the effective horizon curvature, the sign of the coupling parameter c1 , the characteristic parameter of the non-linear electrodynamics, as well as the pressure. Finally, we derived the equation of state and studied P-V criticality in the case of the positive effective horizon curvature.Nam, Cao H.Fri, 14 Dec 2018 09:22:28 GMThttps://repo.scoap3.org/record/29762urn:ISSN:1434-6052Springer/Società Italiana di Fisica2018-12-14Thermodynamics and phase transitions of non-linear charged black hole in AdS spacetime
https://repo.scoap3.org/record/26877
We have derived a non-linear charged black hole solution, in the AdS spacetime, which behaves asymptotically like the RN-AdS black hole but at the short distances like a dS geometry. Thus, the black hole is regular. The thermodynamic quantities of the black hole are derived. Also, we analyzed in details the phase transitions of the black hole by observing the discontinuity of the heat capacity at constant pressure and the cusp type double points in the Gibbs free energy-temperature graph. Furthermore, the thermodynamic phases and their stability are investigated relying on the off-sell Gibbs free energy. Finally, we calculated the critical exponents characterizing the behavior of the relevant thermodynamic quantities near the critical point.Nam, Cao H.Wed, 18 Jul 2018 08:39:35 GMThttps://repo.scoap3.org/record/26877urn:ISSN:1434-6052Springer/Società Italiana di Fisica2018-7-18Non-linear charged dS black hole and its thermodynamics and phase transitions
https://repo.scoap3.org/record/25793
From solving the equations of the motion for a system of Einstein gravity coupled to a non-linear electromagnetic field in the dS spacetime with two integral constants, we derived a static and spherical symmetric non-linear magnetic-charged black hole. It is indicated that this black hole solution behaves like a dS geometry in the short-distance regime. And, thus this black hole is regular. The structure of the black hole horizons is studied in detail. Also, we investigated the thermodynamics and the thermal phase transition of the black hole in both the local and global views. By observing the discontinuous change of the specific heat sign and the swallowtail structure of the free energy, we showed that the black hole can undergo a thermal phase transition between a thermodynamically unstable phase and a thermodynamically stable phase.Nam, Cao H.Sat, 26 May 2018 16:40:04 GMThttps://repo.scoap3.org/record/25793urn:ISSN:1434-6052Springer/Società Italiana di Fisica2018-5-26