Zobrazeno 1 - 7
of 7
pro vyhledávání: '"S, Revathy B"'
Publikováno v:
Eur. Phys. J. B 97, 76 (2024)
We construct a quantum critical Otto engine that is powered by finite temperature baths. We show that the work output of the engine shows universal power law behavior that depends on the critical exponents of the working medium, as well as on the tem
Externí odkaz:
http://arxiv.org/abs/2403.20172
Publikováno v:
J. Phys. A: Math. Theor. 57 165302 (2024)
The efficiency of a quantum heat engine is maximum when the unitary strokes are adiabatic. On the other hand, this may not be always possible due to small energy gaps in the system, especially at the critical point where the gap vanishes. With the ai
Externí odkaz:
http://arxiv.org/abs/2302.07003
Publikováno v:
Entropy 2022, 24(10), 1458
Driving a quantum system across quantum critical points leads to non-adiabatic excitations in the system. This in turn may adversely affect the functioning of a quantum machine which uses a quantum critical substance as its working medium. Here we pr
Externí odkaz:
http://arxiv.org/abs/2208.06578
Publikováno v:
Phys. Rev. Research 2, 043247 (2020)
We demonstrate the existence of universal features in the finite-time thermodynamics of quantum machines by considering a many-body quantum Otto cycle in which the working medium is driven across quantum critical points during the unitary strokes. Sp
Externí odkaz:
http://arxiv.org/abs/2003.06607
Autor:
S., Revathy B., Divakaran, Uma
Publikováno v:
Journal of Stat. Mech: Theory and Experiment, Vol. 2020, 023108 (2020)
We study the non-equilibrium dynamics due to slowly taking a quasiperiodic Hamiltonian across its quantum critical point. The special quasiperiodic Hamiltonian that we study here has two different types of critical lines belonging to two different un
Externí odkaz:
http://arxiv.org/abs/1908.01959
Publikováno v:
Journal of Physics A: Mathematical & Theoretical; 4/19/2024, Vol. 57 Issue 16, p1-16, 16p
The efficiency of a quantum heat engine is maximum when the unitary strokes are adiabatic. On the other hand, this may not be always possible due to small energy gaps in the system, especially at the critical point where the gap vanishes. With the ai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a90463b7f65cfbcffbd04635efe756e4