many-body problem

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many-body problem

[′men·ē ′bäd·ē ‚präb·ləm]
(mechanics)
The problem of predicting the motions of three or more objects obeying Newton's laws of motion and attracting each other according to Newton's law of gravitation. Also known as n-body problem.
References in periodicals archive ?
technologies developed here can readily be utilized to improve the performance of hg lattice clocks and will inspire quantum simulations of unique many-body systems.
com/articles/nature24654) Nature paper Wednesday, titled "Observation of a many-body dynamical phase transition with a 53-qubit quantum simulator," researchers from University of Maryland and National Institute of Standards and Technology said: "As it becomes possible to exert more control over larger numbers of qubits, such simulators will be able to tackle a wider range of problems, such as materials design and molecular modelling, with the ultimate limit being a universal quantum computer that can solve general classes of hard problems3.
But an engineered and controlled collection, a "quantum many-body system," arranges all its atoms in a particular pattern, or correlation, to create the lowest overall energy state.
This reflects everyday life in the laboratory, they say, where systems of many atoms are routinely created and studied using lasers, magneto-optical traps, magnetic traps, and optical traps--the experimental reality of this branch of many-body physics today.
Different from Ricciardi and Urnezawa's result that the stable memory of the brain contributed by the Bose condensation into the ground state of the quantum many-body system of Goldstone particles, Hokkyo concluded that a brain is (1) awaken but inattentive for a single-humped F peaked at v=o; (2) awaken but attentive for F to possess a small second hump on the tail; and, (3) experiencing a memorizing process when the second hump is flattening to form a plateau which persists for indefinitely long time.
Since real-world systems are always many-body problems with infinite combinatorial complexity, neuromorphic electronic machines would be preferable in a host of applications--but useful and practical implementations do not yet exist.
Actually, many phenomena based on charge, spin, coherence and many-body effects of electrons have been demonstrated in various mesoscopic systems.
At low pressures, the second and higher terms are insignificant, whereas at high pressures many-body interactions may be expected to dominate optical properties.
Fundamentally, one must give a description of the many-body wavefunction's excited states to give such a correspondence.
MEG in nm-sized hydrogen-passivated silicon nanowires (NWs), and quasi two-dimensional nanofilms depends strongly on the degree of the core structural disorder as shown by the many-body perturbation theory (MBPT) calculations based on the DFT simulations.
Abstract The potential of mean force (PMF) is the total free energy of a many-body colloidal system, and consequently it includes all the interactions the colloids experience due to collisions with themselves and with the solvent.
In the 1992 edition of his book A Guide to Feynman Diagrams in the Many-Body Problem, physicist Richard Mattuck compares the dilemma to trying to describe a galloping horse and all the grains of dust that it kicks up.