6 papers
Sound as a gauge theory and its infrared triangle
NÃckolas de Aguiar Alves, André G. S. Landulfo
Over the last few decades, a rich structure has been uncovered in the infrared sector of various field theories. This mostly comes through the connections between memory effects, a…
A spacetime-covariant approach to inertial and accelerated quantum clocks in first-quantization
Eduardo A. B. Oliveira, Andre G. S. Landulfo
It is expected that a quantum theory of gravity will radically alter our current notion of spacetime geometry. However, contrary to what was commonly assumed for many decades, quan…
Nonperturbative Danielson-Satishchandran-Wald Decoherence with Unruh-DeWitt detectors
Levy B. N. Batista, André G. S. Landulfo, Robert B. Mann +1
Recently, Danielson, Satishchandran, and Wald (DSW) have proposed a novel source of decoherence for uniformly accelerated charges and masses in spatial superposition in spacetimes…
Null infinity as a Killing horizon
NÃckolas de Aguiar Alves, Andre G. S. Landulfo
Symmetries are ubiquitous in modern physics. They not only allow for a more simplified description of physical systems but also, from a more fundamental perspective, can be seen as…
Globally hyperbolic evaporating black hole and the information loss issue
Juan V. O. Pêgas, André G. S. Landulfo, George E. A. Matsas +1
We discuss the information loss issue for completely evaporating black holes in the context of a globally hyperbolic spacetime that maintains unchanged the entire semiclassical pic…
Positive Mass in General Relativity Without Energy Conditions
NÃckolas de Aguiar Alves, Andre G. S. Landulfo, Bruno Arderucio Costa
A long-standing problem in physics is why observed masses are always positive. While energy conditions in quantum field theory can partly answer this problem, in this paper we find…