Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Thiago R de Oliveira"'
Publikováno v:
New Journal of Physics, Vol 20, Iss 3, p 033032 (2018)
We show that the physical mechanism for the equilibration of closed quantum systems is dephasing, and identify the energy scales that determine the equilibration timescale of a given observable. For realistic physical systems (e.g those with local Ha
Externí odkaz:
https://doaj.org/article/a3e718e8b0774f94b4ff5333b033b24a
Publikováno v:
Journal of High Energy Physics, Vol 2018, Iss 2, Pp 1-31 (2018)
Abstract We introduce a quantum heat engine performing an Otto cycle by using the thermal properties of the quantum vacuum. Since Hawking and Unruh, it has been established that the vacuum space, either near a black hole or for an accelerated observe
Externí odkaz:
https://doaj.org/article/ec9b2e36fa364224ae43181788390133
Publikováno v:
DC Microgrids. :183-240
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d74e6c4a776a49f0626437d7b7e103b7
https://doi.org/10.1002/9781119777618.ch7
https://doi.org/10.1002/9781119777618.ch7
Publikováno v:
Quantum Science and Technology. 8:035010
Low-dimensional metal complexes are versatile materials with tunable physical and chemical properties that make these systems promising platforms for caloric applications. In this context, this work proposes a quantum Stirling cycle based on a dinucl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a0dfb2389c94938cdf8d4774ded8532
https://doi.org/10.1088/2058-9565/accd91
https://doi.org/10.1088/2058-9565/accd91
Publikováno v:
Physical review. E. 105(4-1)
We study a quantum Otto cycle that uses a 2-qubit working substance whose Hamiltonian does not commute with itself at different times during unitary strokes. We investigate how the cycle responds to the loss of quantum adiabaticity when these strokes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14600c228b7e694f317717aa90d39fa5
https://pubmed.ncbi.nlm.nih.gov/35590646
https://pubmed.ncbi.nlm.nih.gov/35590646
Publikováno v:
Physical review. E. 104(5-1)
We compare quantum Otto engines based on two different cycle models: a two-bath model, with a standard heat source and sink, and a measurement-based protocol, where the role of heat source is played by a quantum measurement. We furthermore study thes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::860a141923c6d8a780f975aff48a7573
https://pubmed.ncbi.nlm.nih.gov/34942804
https://pubmed.ncbi.nlm.nih.gov/34942804
We discuss the local equilibration of closed systems using the relative purity, a paradigmatic information-theoretic distinguishability measure that finds applications ranging from quantum metrology to quantum speed limits. First we obtain an upper b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dae449cbb94d0794b78433b42a53829b
Autor:
Thiago R. de Oliveira, Daniel Jonathan
We present a mechanism for efficiency increase in quantum heat engines containing internal energy levels that do not couple to the external work sink. The gain is achieved by using these levels to channel heat in a direction opposite to the one dicta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33e2ef9c114fdc0a5d8326ffcbedbce0
http://arxiv.org/abs/2008.11694
http://arxiv.org/abs/2008.11694
Publikováno v:
American Journal of Physics. 86:275-279
Every university introductory physics course considers the problem of Atwood's machine taking into account the mass of the pulley. In the usual treatment the tensions at the two ends of the string are offhandedly taken to act on the pulley and be res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b5fa2e08ee425e2e7a89fb241323e18
https://doi.org/10.1119/1.5016040
https://doi.org/10.1119/1.5016040
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2018, Iss 2, Pp 1-31 (2018)
Journal of High Energy Physics, Vol 2018, Iss 2, Pp 1-31 (2018)
We introduce a quantum heat engine performing an Otto cycle by using the thermal properties of the quantum vacuum. Since Hawking and Unruh, it has been established that the vacuum space, either near a black hole or for an accelerated observer, behave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94f364f54400b045d31623cc0a7bff63
https://doi.org/10.1007/jhep02(2018)168
https://doi.org/10.1007/jhep02(2018)168