Zobrazeno 1 - 10
of 247
pro vyhledávání: '"Xue, Xun"'
We describe the global structure of a particle model with dark matter called G2HDM, which incorporates a dark sector represented by $SU(2)_{H} \times U(1)_{X}\;$. The gauge group of such model is $\tilde{G}=U(1)_{Y} \times SU(2)_{L} \times SU(3)_{C}
Externí odkaz:
http://arxiv.org/abs/2412.14949
The possibility of distinguishing Dirac and Majorana fermions by cosmic torsion in the spatial-flat FRW spacetime is discussed. The scattering amplitudes of two types of fermions deviate from each other by the vector part of torsion in non-minimal co
Externí odkaz:
http://arxiv.org/abs/2304.00475
Autor:
Lai, Junhui, Xue, Xun
The possibility to distinguish Dirac from Majorana fermion by gravitational interaction and torsion coupling is discussed. The scattering of both Dirac and Majorana particles are the same in the spherically symmetric gravitational field up to the fir
Externí odkaz:
http://arxiv.org/abs/2112.10590
The tension between the Hubble constant obtained from the local measurements and from cosmic microwave background (CMB) measurements motivated us to consider the cosmological model beyond $\Lambda$CDM one. We investigate the cosmology in the large sc
Externí odkaz:
http://arxiv.org/abs/2112.02364
The effective vacuum energy density contributed by the non-trivial contortion distribution and the bare vacuum energy density can be viewed as the energy density of the auxiliary quintessence field potential. We find that the negative bare vacuum ene
Externí odkaz:
http://arxiv.org/abs/2003.09121
Publikováno v:
Chinese Physics C Vol. 44, No. 8 (2020) 085101
The quintessence-like potential of vacuum energy can meet the requirement from both quantum gravity and the accelerating expansion of the universe. The anti-de Sitter vacuum in string theory has to be lifted to the meta-stable de Sitter vacuum with p
Externí odkaz:
http://arxiv.org/abs/1906.11860
Autor:
Shen, Jiayin, Xue, Xun
The accelerating expansion of universe can be described by the non-zero cosmological constant or the dark energy. However, the origin of the dark energy remains a mystery of modern physics. The local Lorentz invariance is the most exact symmetry of t
Externí odkaz:
http://arxiv.org/abs/1802.03502
Publikováno v:
In Chinese Journal of Natural Medicines June 2021 19(6):464-472
Publikováno v:
In Asian Journal of Surgery January 2021 44(1):235-240
The dipole anomaly in the power spectrum of CMB may indicate that the Lorentz boost invarianc is violated at cosmic scale. We assume that the Lorentz symmetry is violated partly from the scale of galaxy. We employ the symmetry of very special relativ
Externí odkaz:
http://arxiv.org/abs/1510.00814