4 papers
The First Law of Black Hole Thermodynamics in Arbitrary Gravity and Matter Theories Using Differential Forms
O. Ramirez, Y. Bonder
Black hole thermodynamics plays a central role in probing the microscopic structure of spacetime. Since the 1990s, a general method for deriving the first law of black hole thermod…
Semiclassical Gravity Beyond General Relativity: Insights from Torsion
R. Morales-Cabrera, Y. Bonder
We develop a semiclassical theory of modified gravity with nontrivial spacetime torsion. In particular, we show that the semiclassical treatment can be axiomatized in the case of E…
Quantum Correlations and Gravity: From the Emergence of a Cosmological Constant to the Gravitation of Particles in Superposition
Johas Morales, Yuri Bonder
One of the main technical obstacles in constructing a consistent theory of quantum gravity is that the metric itself defines the causal structure required for quantization. This mo…
From Explicit Diffeomorphism Breaking to Spontaneous Unimodularization
Yuri Bonder, Johas D. Morales
This contribution investigates modifications of General Relativity that allow or mimic energy nonconservation. We focus on Unimodular Gravity (UG), a theory that explicitly breaks…