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Perturbative Metric of Charged Black Holes in Quadratic Gravity
M. Campanelli, C. O. Lousto, J. Audretsch
We consider perturbative solutions to the classical field equations coming from a quadratic gravitational lagrangian in four dimensions. We study the charged, spherically symmetric…
Short-distance Cut-off from the Quantum Dynamics of Fields in a Black Hole Spacetime
C. O. Lousto
We stress the strongly observer-dependent nature of the fine-grained black hole entropy as computed by usual methods. From the point of view of a fiducial observer, the 1-loop reno…
The Energy Spectrum of the Membrane effective Model for Quantum Black Holes
Carlos O. Lousto
We study first order fluctuations of a relativistic membrane in the curved background of a black hole. The zeroth-order solution corresponds to a spherical membrane tightly coverin…
The Emergence of an Effective two - dimensional Quantum Description from the study of Critical Phenomena in Black Holes
C. O. Lousto
We study the occurrence of critical phenomena in four - dimensional, rotating and charged black holes, derive the critical exponents and show that they fulfill the scaling laws. Co…
A Perturbative Method to solve fourth-order Gravity Field Equations
M. Campanelli, C. O. Lousto, J. Audretsch
We develop a method for solving the field equations of a quadratic gravitational theory coupled to matter. The quadratic terms are written as a function of the matter stress tensor…