Results 121 to 130 of about 1,598,460 (356)

Fluctuation and inertia

open access: yesNuclear Physics B, 2020
How the principle of inertia survives quantum fluctuations is an interesting question. Smolin has proposed a hypothesis that quantum fluctuations are in fact real statistical fluctuations.
Liangsuo Shu   +4 more
doaj   +1 more source

Quantum Collapse and the Second Law of Thermodynamics

open access: yes, 2012
A heat engine undergoes a cyclic operation while in equilibrium with the net result of conversion of heat into work. Quantum effects such as superposition of states can improve an engine's efficiency by breaking detailed balance, but this improvement ...
A. N. Kolmogorov   +2 more
core   +1 more source

Backbone Heterojunction Photocatalysts for Efficient Sacrificial Hydrogen Production

open access: yesAdvanced Functional Materials, EarlyView.
Herein, a ‘single‐component’ organic semiconductor photocatalyst is presented in which a molecular donor is bonded to a polymer acceptor. The resultant material demonstrates exceptional photocatalytic activity for hydrogen evolution in aqueous triethylamine with an outstanding external quantum efficiency of 38% at 420 nm.
Richard J. Lyons   +11 more
wiley   +1 more source

Passivity Deformation Approach for the Thermodynamics of Isolated Quantum Setups

open access: yesPRX Quantum, 2021
Recently implemented quantum devices such as quantum processors and quantum simulators combine highly complicated quantum dynamics with high-resolution measurements. We present a passivity deformation methodology that sets constraints on the evolution of
Raam Uzdin, Saar Rahav
doaj   +1 more source

Thermodynamic Capacity of Quantum Processes

open access: yesPhysical Review Letters, 2019
6 pages, 2 figures, journal version. The technical appendix was split off into a companion paper that will be submitted separately (cf. today's arXiv listing)
Faist, Philippe   +2 more
openaire   +6 more sources

Mechanochemistry‐Assisted Solvent‐Free Supramolecular Engineering for Atomic‐Layered Carbon Nitride Nanosheets with Enhanced Photocatalytic Hydrogen Evolution

open access: yesAdvanced Functional Materials, EarlyView.
A solvent‐free mechanochemistry‐enabled supramolecular engineering strategy is developed to directly synthesize covalent‐interconnected two‐dimensional atomic‐layered carbon nitride nanosheets photocatalyst, bypassing conventional top‐down exfoliation requirements.
Fanglei Yao   +7 more
wiley   +1 more source

Quantum supremacy of many-particle thermal machines

open access: yesNew Journal of Physics, 2016
While the emergent field of quantum thermodynamics has the potential to impact energy science, the performance of thermal machines is often classical.
J Jaramillo, M Beau, A del Campo
doaj   +1 more source

Complete positivity and thermodynamics in a driven open quantum system

open access: yes, 2015
While it is well known that complete positivity guarantees the fulfilment of the second law of thermodynamics, its possible violations have never been proposed as a check of the complete positivity of a given open quantum dynamics.
Argentieri, G.   +3 more
core   +1 more source

Loss-of-entanglement prediction of a controlled-phase gate in the framework of steepest-entropy-ascent quantum thermodynamics [PDF]

open access: green, 2020
J. A. Montañez-Barrera   +3 more
openalex   +1 more source

R\'enyi's quantum thermodynamical inequalities

open access: yesThe Electronic Journal of Linear Algebra, 2018
A theory of thermodynamics has been recently formulated and derived on the basis of R\'enyi entropy and its relative versions. In this framework, the concepts of partition function, internal energy and free energy are defined, and fundamental quantum thermodynamical inequalities are deduced.
Bebiano, Natalia   +2 more
openaire   +3 more sources

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