7 papers
Gauge-invariant thermodynamics of a finite-time quantum Otto engine
Midana Baial Sambú, Thiago R. de Oliveira, Lucas C. Céleri
We investigate a finite-time quantum Otto engine within the framework of gauge-invariant quantum thermodynamics, using the Lipkin-Meshkov-Glick model as the working medium. In this…
Emergence of Thermodynamics from Equilibration in Isolated Quantum Systems
Adalberto D. Varizi, Daniel Jonathan, Thiago R. de Oliveira
Understanding how macroscopic thermodynamic behavior emerges from microscopic quantum dynamics remains an open problem. While equilibration of quantum observables is well establish…
When Isolated Quantum Systems Appear Classical
Thiago R. de Oliveira, Pedro S. Correia, Tiago Debarba +3
The emergence of classical behavior and the origin of thermal equilibrium are two central problems in the foundations of physics. In the standard accounts, both phenomena are typic…
Necessity of entanglement for the typicality argument in statistical mechanics
Pedro S. Correia, Gabriel Dias Carvalho, Thiago R. de Oliveira
Typicality arguments replace the postulated mixed state ensembles of statistical mechanics with pure states sampled uniformly at random, explaining why most microstates of large sy…
Equilibration and the eigenstate thermalization hypothesis as limits to observing macroscopic quantum superpositions
Gabriel Dias Carvalho, Pedro S. Correia, Thiago R. de Oliveira
Macroscopic quantum superpositions are widely believed to be unobservable because large systems cannot be perfectly isolated from their environments. Here, we show that even under…
Sensing ac fields with quantum many-body scars
Matheus Fibger, Andrei Tsypilnikov, Thiago R. de Oliveira +1
Quantum many-body scars (MBS) exhibit weak ergodicity breaking and long-lived coherent dynamics within an otherwise thermal spectrum. We investigate their metrological properties u…