Results 31 to 40 of about 24,077 (241)
Time Integrators for Molecular Dynamics
Entropy, 2013 This paper invites the reader to learn more about time integrators for Molecular Dynamics simulation through a simple MATLAB implementation. An overview of methods is provided from an algorithmic viewpoint that emphasizes long-time stability and finite ...
Nawaf Bou-Rabee
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Quantum local random networks and the statistical robustness of quantum scars
SciPost Physics, 2023 We investigate the emergence of quantum scars in a general ensemble of random Hamiltonians (of which the PXP is a particular realization), that we refer to as quantum local random networks.
Federica Maria Surace, Marcello Dalmonte, Alessandro Silva
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Quantum many-body scars and weak breaking of ergodicity [PDF]
Nature Physics, 2021 Recent discovery of persistent revivals in quantum simulators based on Rydberg atoms have pointed to the existence of a new type of dynamical behavior that challenged the conventional paradigms of integrability and thermalization. This novel collective effect has been named quantum many-body scars by analogy with weak ergodicity breaking of a single ...
Maksym Serbyn +2 more
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Anomalous diffusion and ergodicity breaking in heterogeneous diffusion processes
New Journal of Physics, 2013 We demonstrate the non-ergodicity of a simple Markovian stochastic process with space-dependent diffusion coefficient D ( x ). For power-law forms D ( x ) ≃ | x | ^α , this process yields anomalous diffusion of the form 〈 x ^2 ( t )〉 ≃ t ^2/(2− ^α ...
Andrey G Cherstvy +2 more
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Reviving product states in the disordered Heisenberg chain
Nature Communications, 2023 When a generic quantum system is prepared in a simple initial condition, it typically equilibrates toward a state that can be described by a thermal ensemble.
Henrik Wilming +3 more
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Estimating the Rate of Convergence of the PH/M/1 Model by Reducing to Quasi-Birth-Death Processes
Mathematics, 2023 We are studying the quasi-birth-death process and the property of weak ergodicity. Using the C-matrix method, we derive estimates for the rate of convergence to the limiting regime for the general case of the PH/M/1 model, as well as the particular case ...
Ilya Usov +2 more
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On three methods for bounding the rate of convergence for some continuous–time Markov chains
International Journal of Applied Mathematics and Computer Science, 2020 Consideration is given to three different analytical methods for the computation of upper bounds for the rate of convergence to the limiting regime of one specific class of (in)homogeneous continuous-time Markov chains.
Zeifman Alexander +5 more
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Rational weak mixing in infinite measure spaces
, 2013 Rational weak mixing is a measure theoretic version of Krickeberg's strong ratio mixing property for infinite measure preserving transformations. It requires "{\tt density}" ratio convergence for every pair of measurable sets in a dense hereditary ring ...
Aaronson +5 more
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Gärtner–Ellis condition for squared asymptotically stationary Gaussian processes
Modern Stochastics: Theory and Applications, 2015 We establish the Gärtner–Ellis condition for the square of an asymptotically stationary Gaussian process. The same limit holds for the conditional distribution given any fixed initial point, which entails weak multiplicative ergodicity.
Marina Kleptsyna +2 more
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Applied Sciences, 2022 Sparse arrays with low cost and engineering complexity are widely applied in many fields. However, the high peak sidelobe level (PSLL) of a sparse array causes the degradation of weak target detection performance.
Lening Wang, Hangfang Zhao, Qide Wang
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