5 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…
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…
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…
A finite-resources description of a measurement process and its implications for the "Wigner's Friend" scenario
Fernando de Melo, Gabriel Dias Carvalho, Pedro S. Correia +3
Quantum mechanics started out as a theory to describe the smallest scales of energy in Nature. After a hundred years of development it is now routinely employed to describe, among…