Zobrazeno 1 - 10
of 131
pro vyhledávání: '"Robert van Leeuwen"'
Autor:
Robert van Leeuwen
Publikováno v:
New Journal of Physics, Vol 26, Iss 10, p 103023 (2024)
We develop a method to deduce the symmetry properties of many-body Hamiltonians when they are prepared in Jordan–Wigner form in which they can act on multi-qubit states. Symmetries, such as point-group symmetries in molecules, are apparent in the s
Externí odkaz:
https://doaj.org/article/3f9f497838db49699dcd125025b77201
Publikováno v:
Physical Review X, Vol 13, Iss 3, p 031026 (2023)
In this work, we lay down the ab initio many-body quantum theory of electrons and phonons in equilibrium as well as in steady-state or time-varying settings. Our focus is on the harmonic approximation, but the developed tools can readily incorporate
Externí odkaz:
https://doaj.org/article/5dc05adc896c426cab851176ce633c8b
Autor:
Markus Penz, Robert van Leeuwen
Publikováno v:
Quantum, Vol 7, p 918 (2023)
In a previous work [J. Chem. Phys. 155, 244111 (2021)], we found counterexamples to the fundamental Hohenberg-Kohn theorem from density-functional theory in finite-lattice systems represented by graphs. Here, we demonstrate that this only occurs at v
Externí odkaz:
https://doaj.org/article/290a718cdd6c4b69869140ddac6962e9
Publikováno v:
New Journal of Physics, Vol 21, Iss 10, p 103038 (2019)
We study time-resolved charge transport in a superconducting nanowire using time-dependent Landauer–Büttiker theory. We find that the steady-state Majorana zero-bias conductance peak emerges transiently accompanied by characteristic oscillations a
Externí odkaz:
https://doaj.org/article/ee236d844df7499692ac68cc14845846
The Green's function method is one of the most powerful and versatile formalisms in physics, and its nonequilibrium version has proved invaluable in many research fields. This book provides a unique, self-contained introduction to nonequilibrium many
Publikováno v:
Huisarts en wetenschap. 65:42-44
Publikováno v:
Physical Review B. 105
For a given diagrammatic approximation in many-body perturbation theory it is not guaranteed that positive observables, such as the density or the spectral function, retain their positivity. For zero-temperature systems we developed a method [2014 Ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25f16696beb1e747aa1762cf7a657bca
http://urn.fi/URN:NBN:fi:jyu-202208254337
http://urn.fi/URN:NBN:fi:jyu-202208254337
Publikováno v:
Kleine Kwalen bij kinderen ISBN: 9789036827386
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21a3126cf1f0bc39c232c4ec5301053b
https://doi.org/10.1007/978-90-368-2739-3_43
https://doi.org/10.1007/978-90-368-2739-3_43