Results 21 to 30 of about 4,012,092 (280)

Exact relations for quantum-mechanical few-body and many-body problems with short-range interactions in two and three dimensions [PDF]

open access: yes, 2012
We derive relations between various observables for N particles with zero-range or short-range interactions, in continuous space or on a lattice, in two or three dimensions, in an arbitrary external potential.
Félix Werner   +10 more
core   +6 more sources

The effects of the COVID-19 lockdown on patients with chronic cardiovascular disease in Vietnam

open access: yesJournal of Infection in Developing Countries, 2022
Introduction: We evaluated the impact of the lockdown policy during the COVID-19 pandemic on cardiovascular outpatients of a cardiology clinic in Vietnam from April to June 2020.
Sy Van Hoang   +9 more
doaj   +1 more source

Electromagnetic reactions of few-body systems with the Lorentz integral transform method [PDF]

open access: yes, 2007
Various electromagnetic few-body break-up reactions into the many-body continuum are calculated microscopically with the Lorentz integral transform (LIT) method.
Leidemann, W.
core   +2 more sources

Leveraging Small-Scale Quantum Computers with Unitarily Downfolded Hamiltonians

open access: yesPRX Quantum, 2023
In this work, we propose a quantum unitary downfolding formalism based on the driven similarity renormalization group (QDSRG) that may be combined with quantum algorithms for both noisy and fault-tolerant hardware.
Renke Huang   +2 more
doaj   +1 more source

Automotive Body Shop Design Problems Using Meta-Models Considering Product-Mix Change and Reconfiguration Strategy

open access: yesApplied Sciences, 2021
The estimation of production rate (or throughput) is important in manufacturing system design. Herein, we consider the manufacturing system of an automotive body shop in which two types of car are produced, and one car (engine car) is substituted by the ...
Dug Hee Moon, Dong Ok Kim, Yang Woo Shin
doaj   +1 more source

The quantum N-body problem and the auxiliary field method [PDF]

open access: yes, 2010
Approximate analytical energy formulas for N-body relativistic Hamiltonians with one- and two-body interactions are obtained within the framework of the auxiliary field method. This method has already been proved to be a powerful technique in the case of
Bali   +28 more
core   +3 more sources

Renormalization in Nonrelativistic Quantum Mechanics [PDF]

open access: yes, 1997
The importance and usefulness of renormalization are emphasized in nonrelativistic quantum mechanics. The momentum space treatment of both two-body bound state and scattering problems involving some potentials singular at the origin exhibits ultraviolet ...
Adhikari S K   +15 more
core   +2 more sources

Associations between Reoperations and Psychological Factors after Contralateral Risk-Reducing Mastectomy: A Two-Year Follow-Up Study

open access: yesInternational Journal of Breast Cancer, 2016
Introduction. The aim of the study was to investigate associations between reoperations after contralateral risk-reducing mastectomies (CRRM) and emotional problems, body image, sexuality, and health related quality of life (HRQoL) in women with breast ...
Dmytro Unukovych   +5 more
doaj   +1 more source

A study of neutron-deuteron scattering in configuration space [PDF]

open access: yes, 2006
A new computational method for solving the configuration-space Faddeev equations for the breakup scattering problem has been applied to nd scattering both below and above the two-body threshold.Comment: 4 pages, 3 Postscript figures, uses espcrc1.sty ...
B. Vlahovic   +13 more
core   +2 more sources

Quantum collision theory with phase-space distributions [PDF]

open access: yes, 1983
Quantum-mechanical phase-space distributions, introduced by Wigner in 1932, provide an intuitive alternative to the usual wave-function approach to problems in scattering and reaction theory.
Carruthers, P., Zachariasen, F.
core   +1 more source

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