Results 171 to 180 of about 746,739 (376)

Hamiltonian ABC

open access: yes, 2015
Approximate Bayesian computation (ABC) is a powerful and elegant framework for performing inference in simulation-based models. However, due to the difficulty in scaling likelihood estimates, ABC remains useful for relatively low-dimensional problems. We introduce Hamiltonian ABC (HABC), a set of likelihood-free algorithms that apply recent advances in
Meeds, E., Leenders, R., Welling, M.
openaire   +3 more sources

Proton Acceleration with Relativistic Electromagnetic Shock

open access: yesAdvanced Science, EarlyView.
New Ion Acceleration Mechanism! A novel cosmic‐ray proton acceleration mechanism is proposed, where relativistic electromagnetic shocks accelerate protons transversely. Hamiltonian analysis yields a scaling law linking the proton energy to the minimum longitudinal thickness of the shock.
Ting Xiao   +5 more
wiley   +1 more source

CONSTRAINED HAMILTONIAN SYSTEMS

open access: yesQuantization of Gauge Systems, 2020
A. Hanson, T. Regge, C. Teitelboim
semanticscholar   +1 more source

Symmetry Breaking of Molecules Triggered by Chiral Inorganic Nanostructures Without Organic Components

open access: yesAdvanced Science, EarlyView.
Chiral nano‐inorganics, free of organic chiral ligands, provide a novel platform to direct symmetry breaking in molecular systems, through inorganic‐to‐organic chirality transfer via enantiospecific inorganic–organic interactions, circularly polarized light, and electron spin‐driven enantiopreferential reactions governed by chiral‐induced spin ...
Tao Yao   +3 more
wiley   +1 more source

Browder spectra of closed upper triangular operator matrices

open access: yesAIMS Mathematics
Let $ T_{B} = \left[\begin{array}{ll} A & B \\ 0 & D \end{array}\right] $ be an unbounded upper operator matrix with diagonal domain, acting in $ \mathcal H \oplus\mathcal K $, where $ \mathcal H $ and $ \mathcal K $ are Hilbert spaces.
Qingmei Bai   +2 more
doaj   +1 more source

Microwave‐Driven Dielectric‐Magnetic Regulation of Graphite@α‐MnO2 Toward Enhanced Electromagnetic Wave Absorption

open access: yesAdvanced Science, EarlyView.
This study presents a microwave‐activated composite integrating expanded graphite with α‐MnO2 nanowires, engineered to synergistically optimize dielectric and magnetic properties. The innovative microwave‐driven process enables rapid structural transformation, yielding ultrathin, scalable electromagnetic wave‐absorbing films.
Junyu Lu   +6 more
wiley   +1 more source

Effective Hamiltonian of Electroweak Penguin for Hadronic b Quark Decays [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2009
In this research we work with the effective Hamiltonian and the quark model. We investigate the decay rates of matter-antimatter of quark. We describe the effective Hamiltonian theory and apply this theory to the calculation of current-current ( ), QCD
H. Mehrban
doaj  

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