105 citations · 274 across the 8 of their papers we have counts for
8 papers
Quantum corrections to the Larmor radiation formula in scalar electrodynamics
A. Higuchi, P. J. Walker
We use the semi-classical approximation in perturbative scalar quantum electrodynamics to calculate the quantum correction to the Larmor radiation formula to first order in Planck'…
Classical and quantum radiation reaction in conformally flat spacetime
A. Higuchi, P. J. Walker
We investigate the physics of a charged scalar particle moving in conformally flat spacetime with the conformal factor depending only on time in the framework of quantum electrodyn…
Topological censorship and chronology protection
John L. Friedman, Atsushi Higuchi
Over the past two decades, substantial efforts have been made to understand the way in which physics enforces the ordinary topology and causal structure that we observe, from subnu…
Low-frequency scalar absorption cross sections for stationary black holes
Atsushi Higuchi
We discuss the absorption cross section for the minimally-coupled massless scalar field into a stationary and circularly symmetric black hole with nonzero angular velocity in four…
The covariant graviton propagator in de Sitter spacetime
Atsushi Higuchi, Spyros S. Kouris
We consider the covariant graviton propagator in de Sitter spacetime in a gauge with two parameters, alpha and beta, in the Euclidean approach. We give an explicit form of the prop…
The energy of unit vector fields on the 3-sphere
A. Higuchi, B. S. Kay, C. M. Wood
The stability of the 3-dimensional Hopf vector field, as a harmonic section of the unit tangent bundle, is viewed from a number of different angles. The spectrum of the vertical Ja…