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Publications Influence

Three-dimensional loop quantum gravity: physical scalar product and spin-foam models

In this paper, we address the problem of the dynamics in three-dimensional loop quantum gravity with zero cosmological constant. We construct a rigorous definition of Rovelli's generalized projection… Expand

174 11- PDF

Black hole entropy from the SU(2)-invariant formulation of type I isolated horizons

- J. Engle, K. Noui, A. Pérez, D. Pranzetti
- Physics
- 3 June 2010

A detailed analysis of the spherically symmetric isolated horizon system is performed in terms of the connection formulation of general relativity. The system is shown to admit a manifestly SU(2)… Expand

125 10- PDF

Spin foam model for Lorentzian general relativity

- A. Pérez, C. Rovelli
- Physics
- 7 September 2000

We present a spin foam formulation of Lorentzian quantum General Relativity. The theory is based on a simple generalization of an Euclidean model defined in terms of a field theory over a group. Its… Expand

97 7- PDF

A local first law for black hole thermodynamics

- Ernesto Frodden, Amit B. Ghosh, A. Pérez
- Physics
- 18 October 2011

We first show that stationary black holes satisfy an extremely simple local form of the first law \delta E=\kappa(l) \delta A/(8 \pi) where the thermodynamical energy E=A/(8\pi l) and (local) surface… Expand

53 7- PDF

Black hole entropy and SU(2) Chern-Simons theory.

Black holes (BH's) in equilibrium can be defined locally in terms of the so-called isolated horizon boundary condition given on a null surface representing the event horizon. We show that this… Expand

136 5- PDF

Attenuation of high‐frequency seismic waves beneath the central Andean Plateau

- D. Whitman, B. Isacks, J. Chatelain, J. Chiu, A. Pérez
- Geology
- 10 December 1992

Observed patterns of high-frequency seismic wave attenuation suggest that near 22°S, the upper mantle structure beneath the central Andean plateau changes along strike to the south. Contrasting… Expand

91 5

Physical effects of the Immirzi parameter in loop quantum gravity

- A. Pérez, C. Rovelli
- Physics
- 17 May 2005

The Immirzi parameter is a constant appearing in the general-relativity action used as a starting point for the loop quantization of gravity. The parameter is commonly believed not to appear in the… Expand

133 4- PDF

Finiteness of a spinfoam model for Euclidean quantum general relativity

- A. Pérez
- Physics
- 16 November 2000

Abstract We prove that a certain spinfoam model for Euclidean quantum general relativity, recently defined, is finite: all its all Feynman diagrams converge. The model is a variant of the… Expand

72 4- PDF

Seismicity and tectonics in Jujuy Province, northwestern Argentina

- T. J. Cahill, B. Isacks, D. Whitman, J. Chatelain, A. Pérez, J. Chiu
- Geology
- 1 October 1992

The Portable Array for Numerical Digital Analysis (PANDA) network, a digitally recorded seismic array, operated for nine months in Jujuy province of northwestern Argentina. The network was deployed… Expand

60 4- PDF

3+1 spinfoam model of quantum gravity with spacelike and timelike components

- A. Pérez, C. Rovelli
- Physics
- 10 November 2000

We present a spin foam formulation of Lorentzian quantum general relativity. The theory is based on a simple generalization of a Euclidean model defined in terms of a field theory over a group. The… Expand

49 4- PDF