查看更多>>摘要：We have studied the statistical probability of finding gravitational lenses in the background of a flat Friedmann-Robertson-Walker (FRW) universe for some of the well-established dark energy (DE) parametrization models (Models I-V). We have considered cases where DE and dark matter are separately conserved and interact with each other, and probed the models against varied density parameter Omega(i). Further, we have investigated the models using the varying equation of state (EoS) parameter. We have analyzed the optical depth tau for these DE models. The result of our study has been almost within the estimate.
查看更多>>摘要：In this work, based on [D.-Q. Sun, J.-B. Deng, P. Li and X.-R. Hu, Class. Quantum Grav. 37, 015008 (2020)], we examine the effect of the quintessence field on the microscopic structure of a charged anti-de Sitter (AdS) black hole from the quantization perspective. Indeed, the impact of the state parameter and the quintessence intensity on "energy quantum" is illustrated. Furthermore, we extend the relationship between the number of quanta of the area and the microscopic degrees of freedom of the black hole to the quintessential background. We express the latent heat in terms of the number of quanta of the area of the large black hole (LBH) and the number of quanta of the area of the small black hole (SBH). Besides that, we explore the connection between the microscopic structure and Ruppeiner geothermodynamics in the (mass, pressure)-plane through the number of quanta of area perspective and the quintessence parameters. Finally, we interpret our result in terms of repulsive/attractive interactions amongst the black hole constituents.
查看更多>>摘要：In this paper, we first study the brane cosmological behaviors of Starobinsky inflationary model. In particular, we compute the associated parameters including the perturbation ones. Among others, we find that the spectral index and the tensor-to-scalar ratio are in a good agreement with Planck observational and BICEP/Keck data. Varying the five-dimensional Planck mass M(5p )values, we investigate the thermal behaviors. Concretely, we calculate and examine the reheating cosmological parameters. For a specific value of the stringy parameter, we provide good predictions of the involved quantities. Taking M-5p = 10(12) TeV, we obtain acceptable reheating temperatures.
查看更多>>摘要：We have investigated the contribution of the Higher Twist (HT) Feynman diagrams to the large-p(T) inclusive rho(L) meson production cross-section in proton-proton and proton-antiproton collisions and we discuss the phenomenological consequences of possible HT contributions to cross-sections. To extract HT subprocesses from Leading Twist (LT) background, we use various rho(L) meson distribution amplitudes (DAs). In the numerical calculations, the dependencies of the HT contribution on the transverse momentum and the rapidity are discussed with special emphasis on DAs. Analysis of our results shows that HT contributions decrease more rapidly than LT contributions with increasing p(T). The preceding results demonstrate that HT contributions must be considered especially in the region of low p(T) and the HT contribution to the cross-section depends on the choice of the meson DAs.
Conventi, F. A.D'Ambrosio, G.Iyer, A. M.Rossi, E....
13页
查看更多>>摘要：We present sensitivity projections for discovering a heavy resonance decaying to electron and muon pairs and for probing the charged lepton nonuniversality in such decays at the High Luminosity Large Hadron Collider (HL-LHC) and hadron-hadron Future Circular Collider (FCC-hh). The analysis takes into account the expected differences in the reconstruction efficiencies and the di-lepton mass resolutions for di-electron and di-muon final states. We demonstrate how the analyses at HL-LHC naturally pave the way for a FCC-hh machine thereby underlining its importance.
查看更多>>摘要：The missing label for basis vectors of SU(3) representations corresponding to the reduction SU(3) superset of SO(3) can be provided by the eigenvalues of SO(3) scalars in the enveloping algebra of su(3). There are only two such independent elements of degrees three and four. It is shown how the one of degree four can be diagonalized using the analytical Bethe ansatz.
查看更多>>摘要：In this paper, we study the impact of dark matter (DM) on neutron stars (NSs) that contain antikaon (including K- and (K) over bar (0)) condensations. DM is assumed to be made of nonself annihilating, but strongly or weakly self-interacting fermions. The competition between DM and antikaon condensations makes the gross stellar properties and neutrino emission features of NSs change violently. Results show that the role of antikaon condensations on DM-admixed NSs with weak self-interaction among DM particles is considerable. However, the effect of antikaon condensations with strong self-interaction seems feeble. DM with weak self-interaction favors the occurrence of antikaon condensations in turn, and both K- and (K) over bar (0) condensations are allowed in low-mass DM-admixed NSs. With the fixed medium stellar mass, the neutrino emissivity at the core of the DM-admixed NS with antikaon condensations becomes much lower than that in normal NS matter.
NSTL
World Scientific