48 citations · 107 across the 34 of their papers we have counts for
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Some aspects of QFT in non-inertial frames
Enrique Álvarez, Jesús Anero
Some aspects of quantum field theory in a general (i.e. non inertial) frame of Minkowski spacetime are studied. Conditions for the presence of horizons as well as for the modificat…
Witten diagrams in momentum space and one graviton exchange between scalars in Weyl invariant unimodular gravity
J. Anero, Carmelo P. Martin
We tackle head-on the computation of the -channel Witten diagram in momentum space corresponding to the exchange of a graviton between minimally coupled scalars in Weyl invarian…
Some consequences of the Kerr-Schild gauge
Enrique Álvarez, Jesús Anero
Generalized Kerr-Schild nilpotent deformations of an arbitrary background spacetime $\overline{g}_{\m\n}(x)$ are considered. Those are of the form $\overline{g}_{\m\n}+l_\m l_\n$ w…
Superposition of gravitational fields
Enrique Álvarez, Jesús Anero
Linear superposition of gravitational fields is shown to be possible for a large class of spacetimes, in some specific coordinates. Explicit examples are presented.
Gravitons in a gravitational plane wave
Enrique Alvarez, Jesus Anero, Irene Sanchez-Ruiz
Gravitational plane waves (when Ricci flat) belong to the VSI family. The achronym VSI stands for vanishing scalar invariants, meaning that all scalar invariants built out of Riema…