A5077910356- Black Holes and Theoretical Physics
- Quantum Electrodynamics and Casimir Effect
- Cosmology and Gravitation Theories
- Quantum Mechanics and Applications
- Chemistry Education and Research
- Pulsars and Gravitational Waves Research
- Advanced Fiber Optic Sensors
- Philosophical Thought and Analysis
- Noncommutative and Quantum Gravity Theories
- Semiconductor Lasers and Optical Devices
- Relativity and Gravitational Theory
- Optical Network Technologies
- Psychology and Mental Health
- Astrophysical Phenomena and Observations
Centro Brasileiro de Pesquisas Físicas
2020-2023
Universidade Estadual de Campinas (UNICAMP)
2016-2018
We study the quantum channel between two localized first-quantized systems that communicate in $3+1$ dimensional Schwarzschild spacetime via a field. analyze information carrying capacity of direct and black hole-orbiting null geodesics as well timelike contributions arise because strong Huygens principle does not hold on background. find, particular, nondirect-null contributions, which do possess an analog Minkowski spacetime, can dominate over contributions. cover cases both geodesic...
Field perturbations of a curved background spacetime generally propagate not only at the speed light but also all smaller velocities. This so-called $Hadamard\,tail$ contribution to wave propagation is relevant in various settings, from classical self-force calculations communication between quantum particle detectors. One method for calculating this tail by integrating homogeneous equation using Characteristic Initial Data on cone. However, best our knowledge, has never been implemented...
An analogue model for the ${\mathrm{AdS}}_{2}$ spacetime has been recently introduced by Mosna et al. [Phys. Rev. D 94, 104065 (2016)] considering sound waves propagating on a fluid with an ill-defined velocity profile at its source/sink. The wave propagation is then uniquely defined only when one imposes extra boundary condition source/sink (which corresponds to spatial infinity of ${\mathrm{AdS}}_{2}$). Here we show that, once this smoothed out source/sink, need conditions disappears....
Can you pick a complex subject in quantum mechanics and discuss it with minimum number of equations, simplified form that the general scientific public could understand? This was question presented to graduate students one-year Quantum Mechanics course based on text book Modern by J. Sakurai Jim Napolitano, at State University Campinas (UNICAMP), Brazil. The first seven authors this paper are (alphabetical order) accepted try it. chosen “delocalized states”, will be discussed using...
Field perturbations of a curved background spacetime generally propagate not only at the speed light but also all smaller velocities. This so-called $Hadamard\,tail$ contribution to wave propagation is relevant in various settings, from classical self-force calculations communication between quantum particle detectors. One method for calculating this tail by integrating homogeneous equation using Characteristic Initial Data on cone. However, best our knowledge, has never been implemented...