منابع مشابه
Hamiltonian Approach to 2+1 Dimensional Gravity
It is shown that the reduced particle dynamics of 2 + 1 dimensional gravity in the maximally slicing gauge is of hamiltonian nature. We give the exact diffeomorphism which transforms the expression of the spinning cone geometry in the Deser, Jackiw, ’t Hooft gauge to the maximally slicing gauge. It is explicitly shown that the boundary term in the action, written in hamiltonian form gives the H...
متن کاملConical Singular Solutions in (2+1)-Dimensional Gravity Employing the ADM Canonical Formalism
Topological solutions in the (2+1)-dimensional Einstein theory of gravity are studied within the ADM canonical formalism. It is found that a conical singularity appears in the closed de Sitter universe solution as a topological defect in the case of the Einstein theory with a cosmological constant. Quantum effects on the conical singularity are studied using the de Broglie-Bohm interpretation. ...
متن کاملUnified approach to the regularization of odd dimensional AdS gravity
In this paper I introduce an action principle for odd dimensional AdS gravity with a suitable boundary term which regularizes the theory in such a way that the background substraction and counterterm methods appear as particular cases of this framework. The choice of the boundary term is justified on the grounds that an enhanced ’almost off-shell’ local AdS/Conformal symmetry arises for that ve...
متن کاملPerturbative approach to the two-dimensional quantum gravity
The main part of this presentation is a review of the original works [14, 15, 16, 17, 18, 19] on the perturbative approach to the 2-dimensional quantum gravity. We discuss the renormalization of the two-dimensional dilaton gravity in a covariant gauge, the form of the quantum corrections to the classical potential, and the conditions of Weyl invariance in a theory of string coupled to 2d quantu...
متن کاملAlternative approach to the regularization of odd dimensional AdS gravity
In this paper I present an action principle for odd dimensional AdS gravity which consists of introducing another manifold with the same boundary and a very specific boundary term. This new action allows and alternative approach to the regularization of the theory, yielding a finite euclidean action and finite conserved charges. The choice of the boundary term is justified on the grounds that a...
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: Nuclear Physics B - Proceedings Supplements
سال: 2000
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(00)00761-1