51 citations · 457 across the 40 of their papers we have counts for
40 papers
Corrections to the Unruh Effect from Robin Boundary Conditions in Punctured Minkowski Spacetime
Nickolas P. Botta, João Paulo M. Pitelli, Ricardo A. Mosna
We consider a real massless scalar field in punctured Minkowski spacetime, endowed at the removed origin with the stable one-parameter family of Robin boundary conditions $G(0)-βG'…
When does a sphere fall like a point particle? Quadrupole universality and Weyl-driven hexadecapole deviations in vacuum general relativity
Tiago S. Amancio, Ricardo A. Mosna, Ronaldo S. S. Vieira
We ask when a spinless spherical extended test body in vacuum general relativity moves as its point-particle counterpart. In Newtonian gravity, harmonicity of the external potentia…
Vacuum fluctuations and the renormalized stress-energy tensor on a cone with arbitrary boundary conditions
João Paulo M. Pitelli, Ricardo A. Mosna, Victor Hugo M. Ramos +1
We analyze the vacuum fluctuations and the stress-energy tensor of a scalar field of mass in a conical spacetime, where the topological singularity at the apex requires boundar…
Chaotic orbital dynamics of pulsating stars around black holes surrounded by dark matter halos
Tiago S. Amancio, Ricardo A. Mosna, Ronaldo S. S. Vieira
We analyze the orbital dynamics of spherical test bodies in ``black hole surrounded by dark matter halo'' spherically symmetric spacetimes. When the test body pulsates periodically…
Unruh-deWitt detector in impulsive plane wave spacetimes
João Paulo M. Pitelli, Ricardo A. Mosna
We investigate the response function of an inertial Unruh-deWitt detector in an impulsive plane wave spacetime. Through symmetry considerations applied to the Wightman function, we…
Chaotic dynamics of pulsating spheres orbiting black holes
Fernanda de F. Rodrigues, Ricardo A. Mosna, Ronaldo S. S. Vieira
We study the chaotic dynamics of spinless extended bodies in a wide class of spherically symmetric spacetimes, which encompasses black-hole scenarios in many modified theories of g…