Gauss-Bonnet as Effective Cosmological Constant
نویسندگان
چکیده
منابع مشابه
Black Hole Solutions of Dimensionally Reduced Einstein-gauss-bonnet Gravity with a Cosmological Constant
We study the phase space of the spherically symmetric solutions of the system obtained from the dimensional reduction of the six-dimensional Einstein-Gauss-Bonnet action with a cosmological constant. We show that all the physical solutions have anti-de Sitter asymptotic behavior.
متن کاملVanishing Cosmological Constant in Modified Gauss - Bonnet Gravity with Conformal Anomaly
We consider dark energy cosmology in a de Sitter universe filled with quantum conformal matter. Our model represents a Gauss-Bonnet model of gravity with contributions from quantum effects. To the General Relativity action an arbitrary function of the GB invariant, f(G), is added, and taking into account quantum effects from matter the cosmological constant is studied. For the considered model ...
متن کاملThe Gauss - Bonnet - Grotemeyer Theorem in spaces of constant curvature ∗
In 1963, K.P. Grotemeyer proved an interesting variant of the Gauss-Bonnet Theorem. Let M be an oriented closed surface in the Euclidean space R 3 with Euler characteristic χ(M), Gauss curvature G and unit normal vector field n. Grote-meyer's identity replaces the Gauss-Bonnet integrand G by the normal moment (a · n) 2 G, where a is a fixed unit vector: M (a · n) 2 Gdv = 2π 3 χ(M). We generaliz...
متن کاملEffective cosmological “constant” and quintessence
In this paper we present exactly solved extended quintessence models; furthermore, through a dynamical effective Q-cosmological ”constant”, we recover some of the Λ decaying cases found in the literature. Finally we introduce a sort of complementarity between the Q-dominated or Λdominated expansions of the Universe. e-mail addresses: [email protected] [email protected]
متن کاملEffective Gauss-Bonnet Interaction in Randall-Sundrum Compactification
The effective gravitational interaction below the Planck scale in the RandallSundrum world is shown to be the Gauss-Bonnet term. In this theory we find that there exists another static solution with a positive bulk cosmological constant. Also, there exist solutions for positive visible sector cosmological constant, which is needed for a later Friedman-Robertson-Walker universe. 11.25.Mj, 12.10....
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: Communications in Theoretical Physics
سال: 2012
ISSN: 0253-6102
DOI: 10.1088/0253-6102/57/4/15