11 citations · 31 across the 6 of their papers we have counts for
7 papers
Vacuum entanglement in a time-dependent electric field
Álvaro Álvarez-Dom\'ınguez, Luis J. Garay, Mercedes Mart\'ın-Benito +1
We analyze the correlations of the vacuum state of a charged scalar field by constructing localized observables in two disjoint regions. We consider a time-dependent homogeneous el…
Quantum fermion superradiance and vacuum ambiguities on charged black holes
Álvaro Álvarez-Domínguez, Elizabeth Winstanley
Unlike a classical charged bosonic field, a classical charged fermion field on a static charged black hole does not exhibit superradiant scattering. We demonstrate that the quantum…
No black holes from light
Álvaro Álvarez-Domínguez, Luis J. Garay, Eduardo Martín-Martínez +1
We show that it is not possible to concentrate enough light to precipitate the formation of an event horizon. We argue that the dissipative quantum effects coming from the self-int…
States of low energy in the Schwinger effect
Álvaro Álvarez-Domínguez, Luis J. Garay, Mercedes Martín-Benito +1
States of low energy in cosmology minimise the energy density when smeared in a chosen time interval. We extend such construction to generic homogeneous (possibly anisotropic) part…
Operational realization of quantum vacuum ambiguities
Álvaro Álvarez-Domínguez, José A. R. Cembranos, Luis J. Garay +3
We provide a reinterpretation of the quantum vacuum ambiguities that one encounters when studying particle creation phenomena due to an external and time-dependent agent. We propos…
Generalized quantum Vlasov equation for particle creation and unitary dynamics
Álvaro Álvarez-Domínguez, Luis J. Garay, Mercedes Martín-Benito
The loss of time-translational invariance caused by a time-dependent external agent leads to particle creation effects in quantum field theory. This phenomenon results in ambiguiti…
Quantum unitary dynamics of a charged fermionic field and Schwinger effect
Álvaro Álvarez-Domínguez, Luis J. Garay, David García-Heredia +1
In quantum field theory, particle creation occurs, in general, when an intense external field, such as an electromagnetic field, breaks time translational invariance. This leads to…