OBSERVABLE QUANTITIES IN WEYL GRAVITY
نویسندگان
چکیده
منابع مشابه
Observable Quantities in Cosmological Models with Strings
The Friedman equation for the universe with arbitrary curvature (k = 0,±1), filled with mutually noninteracting pressureless dust, radiation, cosmological constant, and strings is considered. We assume the string domination scenario for the evolution of the latter component. Moreover, we discuss the simplest possibility for the scaling of the string energy density: ̺ ∝ R. For such models we writ...
متن کاملQuark mass matrices and observable quantities
A nearly historical account of quark mass matrix models is given, and the structure of quark mass matrices in the Standard Model is studied. For a minimal parameter basis suggested earlier, where Mu is diagonal and Md11, Md13, Md31 are zero, the dependence of mass matrices on the CP violating phase δ of VCKM is reported: all parameters are almost independent, except Md22 and Md23, and the equal...
متن کاملA derivation of Weyl gravity
In this paper, two things are done. (i) Using cohomological techniques, we explore the consistent deformations of linearized conformal gravity in 4 dimensions. We show that the only possibility involving no more than 4 derivatives of the metric (i.e., terms of the form ∂gμν , ∂gμν∂gαβ , ∂ gμν∂ gαβ , ∂ gμν∂gαβ∂gρσ or ∂gμν∂gαβ∂gρσ∂gγδ with coefficients that involve undifferentiated metric compone...
متن کاملTopological Black Holes in Weyl Conformal Gravity
We present a class of exact solutions of Weyl conformal gravity, which have an interpretation as topological black holes. Solutions with negative, zero or positive scalar curvature at infinity are found, the former generalizing the wellknown topological black holes in anti-de Sitter gravity. The rather delicate question of thermodynamic properties of such objects in Weyl conformal gravity is di...
متن کاملNni-form Quark Mass Matrix Expressed by the Observable Quantities
It is pointed out that the phase convention of the CKM matrix V aaects texture analysis of the quark mass matrices (M u ; M d) when we try to describe (M u ; M d) by the observable quantities (quark masses and CKM matrix parameters) only. This is demonstrated for a case of the non-Hermitian Fritzsch-type mass matrix (f M u ; f M d), which is a general expression of quark mass matrix (M u ; M d)...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 2011
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732311036759