Abstract
We study the phenomenon of entanglement extraction from the vacuum of a massless scalar field in (1 + 1) dimensional spacetime in presence of a moving Dirichlet boundary condition, i.e. mirror spacetime, using two inertial Unruh-DeWitt detectors. We consider a variety of non-trivial trajectories for these accelerating mirrors and find (1) an entanglement inhibition phenomenon similar to that recently seen for black holes, as well as (2) trajectory-independent entanglement enhancement in some regimes. We show that the qualitative result obtained is the same for both linear and derivative couplings of the detector with the field.
Highlights
JHEP06(2019)021 attractive toy model to gain insights into the physics of quantum fields in curved spacetimes
We study the phenomenon of entanglement extraction from the vacuum of a massless scalar field in (1 + 1) dimensional spacetime in presence of a moving Dirichlet boundary condition, i.e. mirror spacetime, using two inertial Unruh-DeWitt detectors
More recently it has been shown that for some generic trajectories certain limits can be taken to obtain thermal responses [19] or even model black hole collapse from a null shell [20,21,22]. We note in this context that a study of entanglement harvesting in black hole spacetimes was recently initiated for the first time for (2 + 1)-dimensional black holes [23], and so it is of further interest to investigate entanglement harvesting in spacetimes with non-trivial boundary conditions that could simulate the collapse of matter into a black hole
Summary
The variable parameters will be denoted as follows: (tj, xj) for the time and position coordinates of the peak of the Gaussian switching of detector j, Ω for the energy gap of the detectors, dA for the distance of detector A from the mirror at t = tA and ∆x = xB − xA for the detector separation. The results will be presented in terms of the corresponding dimensionless variables, {tA/σ, dA/σ, Ωjσ, ∆x/σ}. We first describe general results for all mirror trajectories, followed by an analysis of the effects due to specific mirror motions
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
