One-loop amplitudes in Euclidean quantum gravity.
نویسندگان
چکیده
Giampiero Esposito, Alexander Yu. Kamenshchik, Igor V. Mishakov, and Giuseppe Pollifrone Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Mostra d'Oltremare Padiglione 20, 80125 Napoli, Italy Dipartimento di Scienze Fisiche, Mostra d'Oltremare Padiglione 19, 80125 Napoli, Italy Nuclear Safety Institute, Russian Academy of Sciences, 52 Bolshaya Tulskaya, Moscow, 113191, Russia Dipartimento di Fisica, Universit a di Roma \La Sapienza", and INFN, Sezione di Roma, Piazzale Aldo Moro 2, 00185 Roma, Italy
منابع مشابه
Euclidean Maxwell Theory in the Presence of Boundaries
This paper describes recent progress in the analysis of relativistic gauge conditions for Euclidean Maxwell theory in the presence of boundaries. The corresponding quantum amplitudes are studied by using Faddeev-Popov formalism and zeta-function regularization, after expanding the electromagnetic potential in harmonics on the boundary 3-geometry. This leads to a semiclassical analysis of quantu...
متن کامل60 66 Gravitons in one - loop quantum cosmology : correspondence between covariant and non -
Istituto Nazionale di Fisica Nucleare, Mostra d'Oltremare Padiglione 20, 80125 Napoli, Italy Dipartimento di Scienze Fisiche, Mostra d'Oltremare Padiglione 19, 80125 Napoli, Italy Nuclear Safety Institute, Russian Academy of Sciences, 52 Bolshaya Tulskaya, Moscow, 113191, Russia Dipartimento di Fisica, Universit a di Roma \La Sapienza", Piazzale Aldo Moro 2, 00185 Roma, Italy Abstract. The disc...
متن کاملNon-local Properties in Euclidean Quantum Gravity Non-local Properties in Euclidean Quantum Gravity
In the one-loop approximation for Euclidean quantum gravity, the boundary conditions which are completely invariant under gauge transformations of metric perturbations involve both normal and tangential derivatives of the metric perturbations h 00 and h 0i , while the h ij perturbations and the whole ghost one-form are set to zero at the boundary. The corresponding one-loop divergency for pure ...
متن کاملExotic Spaces in Quantum Gravity I: Euclidean Quantum Gravity in Seven Dimensions
It is well known that in four or more dimensions, there exist exotic manifolds; manifolds that are homeomorphic but not diffeomorphic to each other. More precisely, exotic manifolds are the same topological manifold but have inequivalent differentiable structures. This situation is in contrast to the uniqueness of the differentiable structure on topological manifolds in one, two and three dimen...
متن کاملLorentzian LQG vertex amplitude
We generalize a model recently proposed for Euclidean quantum gravity to the case of Lorentzian signature. The main features of the Euclidean model are preserved in the Lorentzian one. In particular, the boundary Hilbert space matches the one of SU(2) loop quantum gravity. As in the Euclidean case, the model can be obtained from the Lorentzian Barrett-Crane model from a flipping of the Poisson ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Physical review. D, Particles and fields
دوره 52 6 شماره
صفحات -
تاریخ انتشار 1995