Results 51 to 60 of about 8,301,436 (379)

Quantum field theory in (0 + 1) dimensions [PDF]

open access: yes, 2007
We show that many of the key ideas of quantum field theory can be illustrated simply and straightforwardly by using toy models in (0 + 1) dimensions.
Boozer, A. D.
core   +1 more source

Advanced capabilities for materials modelling with Quantum ESPRESSO [PDF]

open access: yesJournal of Physics: Condensed Matter, 2017
Quantum ESPRESSO is an integrated suite of open-source computer codes for quantum simulations of materials using state-of-the-art electronic-structure techniques, based on density-functional theory, density-functional perturbation theory, and many-body ...
P. Giannozzi   +49 more
semanticscholar   +1 more source

Bell's Inequalities, Superquantum Correlations, and String Theory

open access: yes, 2011
We offer an interpretation of super-quantum correlations in terms of a "doubly" quantum theory. We argue that string theory, viewed as a quantum theory with two deformation parameters, the string tension \alpha' and the string coupling constant g_s, is ...
Chang, Lay Nam   +4 more
core   +1 more source

Thermal destabilization of self-bound ultradilute quantum droplets

open access: yesNew Journal of Physics, 2020
We theoretically investigate the temperature effect in a Bose–Bose mixture with attractive inter-species interactions, in the regime where a self-bound ultradilute quantum droplet forms due to the subtle balance between the attractive mean-field force ...
Jia Wang, Hui Hu, Xia-Ji Liu
doaj   +1 more source

The Josephson junction as a quantum engine

open access: yesNew Journal of Physics, 2023
We treat the Cooper pairs in the superconducting electrodes of a Josephson junction (JJ) as an open system, coupled via Andreev scattering to external baths of electrons.
Robert Alicki   +4 more
doaj   +1 more source

Quantum Hamilton-Jacobi Theory [PDF]

open access: yesPhysical Review Letters, 2007
Quantum canonical transformations have attracted interest since the beginning of quantum theory. Based on their classical analogues, one would expect them to provide a powerful quantum tool. However, the difficulty of solving a nonlinear operator partial differential equation such as the quantum Hamilton-Jacobi equation (QHJE) has hindered progress ...
Roncadelli, Marco, Schulman, L. S.
openaire   +3 more sources

Quantum coherence on selectivity and transport of ion channels

open access: yesScientific Reports, 2022
Recently, it has been suggested that ion channel selectivity filter may exhibit quantum coherence, which may be appropriate to explain ion selection and conduction processes. Potassium channels play a vital role in many physiological processes.
Mina Seifi   +2 more
doaj   +1 more source

Depicting qudit quantum mechanics and mutually unbiased qudit theories

open access: yes, 2014
We generalize the ZX calculus to quantum systems of dimension higher than two. The resulting calculus is sound and universal for quantum mechanics. We define the notion of a mutually unbiased qudit theory and study two particular instances of these ...
Ranchin, André
core   +2 more sources

On quantum theory

open access: yesInternational Journal of Quantum Information, 2019
A discussion of fundamental aspects of quantum theory is presented, stressing the essential role of “events.”
openaire   +3 more sources

Quantum cluster theories

open access: yesReviews of Modern Physics, 2005
submitted to Reviews of Modern ...
Maier, Thomas   +3 more
openaire   +4 more sources

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