Results 1 to 10 of about 343,701 (293)

Sine-square deformed mean-field theory

Physical Review Research, 2022
We develop a theory that accurately evaluates quantum phases with any large-scale emergent structures, including incommensurate density waves or topological textures without a priori knowing their periodicity.
Masataka Kawano, Chisa Hotta
doaj   +3 more sources

Sine-Gordon mean field theory of a Coulomb Gas [PDF]

Physical Review E, 1997
Sine-Gordon field theory is used to investigate the phase diagram of a neutral Coulomb gas. A variational mean field free energy is constructed and the corresponding phase diagrams in two (2d) and three dimensions (3d) are obtained.
A. N. Berker, A. Z. Panagiotopoulos, Alexandre Diehl, B. Guillot, D. Brydges, D. J. Amit, D. R. Nelson, G. M. Zhang, G. Orkoulas, G. Parisi, H. J. F. Knops, J. L. Cardy, J. M. Caillol, J. M. Kosterlitz, J. P. Valleau, J.-R. Lee, M. E. Fisher, M. E. Fisher, Marcia C. Barbosa, P. Minnhagen, P. Minnhagen, P. Minnhagen, S. A. Brazovskii, S. F. Edwards, S. T. Chui, T. Ohta, T. Ohta, Y. Levin, Y. Levin, Y. Saito, Yan Levin   +30 more
core   +3 more sources

Optimal bounds for the sine and hyperbolic tangent means by arithmetic and centroidal means in exponential type

AIMS Mathematics, 2021
In this paper, optimal bounds for the sine and hyperbolic tangent means by arithmetic and centroidal means in exponential type are established using the monotone form of L'Hospital's rule and the criterion for the monotonicity of the quotient of power ...
Ling Zhu, Branko Malešević
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Sine-Fitting Residual Root Mean Square, Mean, and Variance in the Presence of Phase Noise or Jitter

Sci
Fitting a sinusoidal model to a set of data points is a common practice in engineering, where one wants to estimate some quantities of interest by carrying out a sequence of measurements on a physical phenomenon.
Francisco Alegria
doaj   +2 more sources

Variance of the root mean square value of the residuals of sine fitting in the presence of additive noise [PDF]

Scientific Reports
The least-squares fitting of a sinusoidal model to a set of data points is a common procedure in signal processing algorithms. A residual is the difference between the value of one data points and the estimated value of that point given by the sinusoidal
Francisco A. C. Alegria
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Sharp power mean bounds for the tangent and hyperbolic sine means [PDF]

Journal of Mathematical Inequalities, 2021
Summary: In the article, we prove that the double inequalities \begin{align*} \boldsymbol{M}_{\alpha_1}(a,b)
Zhao, Tie-Hong, Chu, Yu-Ming, Qian, Wei-Mao   +2 more
openaire   +2 more sources

Refinements of bounds for the arithmetic mean by new Seiffert-like means

AIMS Mathematics, 2021
In the article, we present the sharp upper and lower bounds for the arithmetic mean in terms of new Seiffert-like means, which give some refinements of the results obtained in [1].
Wei-Mao Qian, Tie-Hong Zhao, Yu-Pei Lv
doaj   +1 more source

Optimal bounds for the sine and hyperbolic tangent means II [PDF]

Journal of Applied Analysis, 2020
Abstract We provide the optimal bounds for the sine and hyperbolic tangent means in terms of various weighted means of the arithmetic and the contraharmonic means.
Monika Nowicka, Alfred Witkowski
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New Bounds for Arithmetic Mean by the Seiffert-like Means

Mathematics, 2022
By using the power series of the functions 1/sinnt and cost/sinnt (n=1,2,3,4,5), and the estimation of the ratio of two adjacent Bernoulli numbers, we obtained new bounds for arithmetic mean A by the weighted arithmetic means of Mtan1/3Msin2/3 and 13Mtan+
Ling Zhu
doaj   +1 more source

Optimal bounds for the tangent and hyperbolic sine means II [PDF]

Journal of Mathematical Inequalities, 2020
Summary: We provide the optimal bounds for the tangent and hyperbolic sine means in terms of various weighted means of the arithmetic and harmonic means. For Part I see [the authors, ``Optimal bounds for the tangent and hyperbolic sine means'', Aequationes Math. (to appear), \url{doi:10.1007/s00010-020-00705-6}].
Nowicka, Monika, Witkowski, Alfred
openaire   +2 more sources