7 citations · 11 across the 11 of their papers we have counts for
11 papers
Noether Symmetries Generate Deterministic Energy-Harvesting Protocols
Ali Akil, M. Hamed Mohammady, Zihan Wang +1
We consider the general principles for when deterministic energy harvesting (DEH) is possible. DEH means absorbing energy from a fluctuating source without entropy being absorbed.…
A Quantum Superposition of Black Hole Evaporation Histories: Recovering Unitarity
Ali Akil, Lorenzo Giannelli, Leonardo Modesto +3
Black hole evaporation is one of the most striking phenomena at the interface between gravity and quantum physics. In Hawking's semi-classical treatment, where matter is quantum me…
Black Hole Information From Non-vacuum Localised Quantum States
Ali Akil, Riccardo Falcone, Nicetu Tibau Vidal +1
We revisit Hawking's black hole radiation derivation, including the quantum state of the initial matter forming the black hole. We investigate how non-vacuum initial quantum states…
The sum of entanglement and subsystem coherence is invariant under quantum reference frame transformations
Carlo Cepollaro, Ali Akil, Paweł Cieśliński +2
Recent work on quantum reference frames (QRFs) has demonstrated that superposition and entanglement are properties that change under QRF transformations. Given their utility in qua…
A Dark Matter Probe in Accreting Pulsar-Black Hole Binaries
Ali Akil, Qianhang Ding
The accretion of dark matter (DM) into astrophysical black holes slowly increases their mass. The rate of this mass accretion depends on the DM model and the model parameters. If t…
Semiclassical spacetimes at super-Planckian scales from delocalized sources
Ali Akil, Mariano Cadoni, Leonardo Modesto +2
We derive the gravitational field and the spacetime metric generated by sources in quantum superposition of different locations. We start by working in a Newtonian approximation, i…
Quantum superposition of black hole states as a communication resource
Richard Howl, Ali Akil, Hlér Kristjánsson +2
The interplay between black holes and quantum information has revealed deep connections between gravity and quantum mechanics. For example, the classical spacetime geometry of a bl…
Conformalons: a new class of black hole mimickers
Leonardo Modesto, Ali Akil, Cosimo Bambi
In any conformally invariant gravitational theory, the space of exact solutions is greatly enlarged. Therefore, we cannot exclude the Weyl's conformal invariance to be spontaneousl…
Gauge Invariance, Polar Coordinates and Inflation
Ali Akil, Xi Tong
We point out the necessity of resolving the apparent gauge dependence in the quantum corrections of cosmological observables for Higgs-like inflation models. We highlight the fact…
A Firepoint at the Black Hole Singularity
Ali Akil, Oscar Dahlsten, Leonardo Modesto
In his original derivation, Hawking showed that a Schwarzschild black hole is unstable at quantum level and it evolves to a final thermal mixed state violating unitarity. There are…
Entanglement swapping in black holes: restoring predictability
Ali Akil, Oscar Dahlsten, Leonardo Modesto
Hawking's black hole evaporation process suggests that we may need to choose between quantum unitarity and other basic physical principles such as no-signalling, entanglement monog…