Results 81 to 90 of about 11,030 (203)
Journal of High Energy Physics, 2020 We investigate the Rényi entropy of the excited states produced by the current and its derivatives in the two-dimensional free massless non-compact bosonic theory, which is a two-dimensional conformal field theory.
Jiaju Zhang, M.A. Rajabpour
doaj +1 more source
A Network‐Based Approach to Identifying Key Components in Structural Vibrations
PAMM, Volume 25, Issue 4, December 2025.ABSTRACT Modeling the dynamics of systems with many interacting components, such as robots, wind turbines, and trusses, remains challenging today. These systems often display complex oscillatory responses to external inputs, and harmful vibrations might be excited along with the desired motion.
Charlotte Geier, Norbert Hoffmann
wiley +1 more source
Entanglement spectra of quantum Heisenberg ladders
, 2010 Bipartite entanglement measures are fantastic tools to investigate quantum phases of correlated electrons. Here, I analyze the entanglement spectrum of **gapped** two-leg quantum Heisenberg ladders on a periodic ribbon partitioned into two identical ...
Poilblanc, Didier
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Logarithmic black hole entropy corrections and holographic Rényi entropy
European Physical Journal C: Particles and Fields, 2018 The entanglement and Rényi entropies for spherical entangling surfaces in CFTs with gravity duals can be explicitly calculated by mapping these entropies first to the thermal entropy on hyperbolic space and then, using the AdS/CFT correspondence, to the ...
Subhash Mahapatra
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Statistical Complexity of Quantum Learning
Advanced Quantum Technologies, Volume 8, Issue 12, December 2025.The statistical performance of quantum learning is investigated as a function of the number of training data N$N$, and of the number of copies available for each quantum state in the training and testing data sets, respectively S$S$ and V$V$. Indeed, the biggest difference in quantum learning comes from the destructive nature of quantum measurements ...
Leonardo Banchi +3 more
wiley +1 more source
Fast Construction on a Restricted Budget
Random Structures &Algorithms, Volume 67, Issue 4, December 2025.ABSTRACT We introduce a model of a controlled random graph process. In this model, the edges of the complete graph Kn$$ {K}_n $$ are ordered randomly and then revealed, one by one, to a player called Builder. He must decide, immediately and irrevocably, whether to purchase each observed edge.
Alan Frieze +2 more
wiley +1 more source
On some interrelations of generalized $q$-entropies and a generalized Fisher information, including a Cram\'er-Rao inequality [PDF]
, 2013 In this communication, we describe some interrelations between generalized $q$-entropies and a generalized version of Fisher information. In information theory, the de Bruijn identity links the Fisher information and the derivative of the entropy.
Bercher, Jean-François
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, 2018 We present a general framework for the generation of random unitaries based on random quenches in atomic Hubbard and spin models, forming approximate unitary $n$-designs, and their application to the measurement of R\'enyi entropies.
Cirac, J. I. +4 more
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Entanglement and chaos in warped conformal field theories
Journal of High Energy Physics, 2019 Various aspects of warped conformal field theories (WCFTs) are studied including entanglement entropy on excited states, the Rényi entropy after a local quench, and out-of-time-order four-point functions.
Luis Apolo +4 more
doaj +1 more source
Statistical region based active contour using a fractional entropy descriptor: Application to nuclei cell segmentation in confocal microscopy images [PDF]
, 2013 We propose an unsupervised statistical region based active contour approach integrating an original fractional entropy measure for image segmentation with a particular application to single channel actin tagged fluorescence confocal microscopy image ...
Carreiras, F +5 more
core +1 more source