Results 31 to 40 of about 10,181 (161)

Green's function approach to entanglement entropy on lattices and fuzzy spaces

open access: yesPhysics Letters B, 2019
We develop a Green's function approach to compute Rényi entanglement entropy on lattices and fuzzy spaces. The Rényi entropy resulting from tracing out an arbitrary collection of subsets of coupled harmonic oscillators is written as zero temperature ...
Amel Allouche, Djamel Dou
doaj   +1 more source

The information-theoretic meaning of Gagliardo--Nirenberg type inequalities

open access: yes, 2018
Gagliardo--Nirenberg inequalities are interpolation inequalities which were proved independently by Gagliardo and Nirenberg in the late fifties. In recent years, their connections with theoretic aspects of information theory and nonlinear diffusion ...
Toscani, Giuseppe
core   +1 more source

Generalizations of Levinson type inequalities via new Green functions with applications to information theory

open access: yesJournal of Inequalities and Applications, 2023
In this paper, four new Green functions are used to generalize Levinson-type inequalities for the class of 3-convex functions. The f-divergence, Renyi entropy, Renyi divergence, Shannon entropy, and the Zipf–Mandelbrot law are also used to apply the main
Awais Rasheed   +3 more
doaj   +1 more source

On empirical cumulant generating functions of code lengths for individual sequences

open access: yes, 2016
We consider the problem of lossless compression of individual sequences using finite-state (FS) machines, from the perspective of the best achievable empirical cumulant generating function (CGF) of the code length, i.e., the normalized logarithm of the ...
Merhav, Neri
core   +1 more source

Strong and Weak Optimizations in Classical and Quantum Models of Stochastic Processes [PDF]

open access: yes, 2018
Among the predictive hidden Markov models that describe a given stochastic process, the {\epsilon}-machine is strongly minimal in that it minimizes every R\'enyi-based memory measure. Quantum models can be smaller still.
Crutchfield, James P., Loomis, Samuel
core   +2 more sources

Stability of Tsallis antropy and instabilities of Renyi and normalized Tsallis entropies: A basis for q-exponential distributions

open access: yes, 2001
The q-exponential distributions, which are generalizations of the Zipf-Mandelbrot power-law distribution, are frequently encountered in complex systems at their stationary states.
A. K. Rajagopal   +8 more
core   +3 more sources

Complexity Analysis of Bubble Plumes in Power Law Fluids Based on Chaos Theory

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT In order to reveal the complexity of the internal flow of bubble plume in power law fluid, the flow characteristics and chaotic characteristics of plume are studied by experiment and theory. The chaotic characteristic parameters (correlation dimension D, K entropy, and Lyapunov exponent λ) of gas velocity under different superficial gas ...
Xin Dong   +6 more
wiley   +1 more source

Lower and upper bounds for entanglement of Rényi-α entropy

open access: yesScientific Reports, 2016
Entanglement Rényi-α entropy is an entanglement measure. It reduces to the standard entanglement of formation when α tends to 1. We derive analytical lower and upper bounds for the entanglement Rényi-α entropy of arbitrary dimensional bipartite quantum ...
Wei Song, Lin Chen, Zhuo-Liang Cao
doaj   +1 more source

Entropy linear response theory with non-Markovian bath

open access: yesJournal of High Energy Physics, 2021
We developed a perturbative calculation for entropy dynamics, which considers a sudden coupling between a system and a bath. The theory we developed can work in a general environment without Markovian approximation.
Yu Chen
doaj   +1 more source

Mid‐Domain Effect and Wooded Habitat Shape Mediterranean Reptile Communities

open access: yesBiological Diversity, EarlyView.
Analyzing a large number of reptiles observed across protected areas in Central Italy, we tested whether the mid‐domain effect explains hump‐shaped richness–elevation patterns. Species richness was best predicted by the combined influence of geometric constraints and woodland cover, revealing two contrasting species clusters and offering a robust ...
Daniele Dendi   +3 more
wiley   +1 more source

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