Results 21 to 30 of about 15,527,868 (309)
Exact model of conformal quintessence
19 pages, RevTeX 4, 4 figures, to appear in Phys.
Chimento, Luis Pascual +2 more
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Exact quantization conditions for the elliptic Ruijsenaars-Schneider model
We propose and test exact quantization conditions for the N-particle quantum elliptic Ruijsenaars-Schneider integrable system, as well as its Calogero-Moser limit, based on the conjectural correspondence to the five-dimensional N = 1 ∗ $$ \mathcal{N}={1}^
Yasuyuki Hatsuda +2 more
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EXACT SOLVABILITY OF THE CALOGERO AND SUTHERLAND MODELS [PDF]
Translationally invariant symmetric polynomials as coordinates for N-body problems with identical particles are proposed. It is shown that in those coordinates the Calogero and Sutherland N-body Hamiltonians, after appropriate gauge transformations, can be presented as a quadratic polynomial in the generators of the algebra sl N in finitedimensional ...
Rühl, Werner, Turbiner, Alexander
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exact-real is a C++/Python library which provides exact lazy computations in the Real Numbers. In particular it implements arithmetic and comparisons of (random) transcendental numbers.Please visit our home page for more ...
Rüth, Julian
core +1 more source
Statistical tests under Dallal's model: Asymptotic and exact methods.
This paper proposes asymptotic and exact methods for testing the equality of correlations for multiple bilateral data under Dallal's model. Three asymptotic test statistics are derived for large samples.
Zhiming Li, Changxing Ma, Mingyao Ai
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Exact scaling in competitive growth models [PDF]
11 pages, 6 ...
Braunstein, LA, Lam, CH
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Exact Model Reduction for Continuous-Time Open Quantum Dynamics [PDF]
We consider finite-dimensional many-body quantum systems described by time-independent Hamiltonians and Markovian master equations, and present a systematic method for constructing smaller-dimensional, reduced models that $exactly$ reproduce the time ...
Tommaso Grigoletto +3 more
doaj +1 more source
Exact Inference for Integrated Population Modelling [PDF]
AbstractIntegrated population modelling is widely used in statistical ecology. It allows data from population time series and independent surveys to be analysed simultaneously. In classical analysis the time-series likelihood component can be conveniently approximated using Kalman filter methodology. However, the natural way to model systems which have
P. Besbeas, B.J.T. Morgan
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A behavioral approach to linear exact modeling [PDF]
Summary: The behavioral approach to system theory provides a parameter-free framework for the study of the general problem of linear exact modeling and recursive modeling. The main contribution of this paper is the solution of the (continuous-time) polynomial-exponential time series modeling problem.
ANTOULAS, AC, WILLEMS, JC
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Exact Solutions in Modified Gravity Models [PDF]
We review the exact solutions in modified gravity. It is one of the main problems of mathematical physics for the gravity theory. One can obtain an exact solution if the field equations reduce to a system of ordinary differential equations. In this paper we consider a number of exact solutions obtained by the method of separation of variables.
Valery V. Obukhov, Andrey N. Makarenko
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