Results 51 to 60 of about 1,625,671 (139)

Pair density functional theory by means of the correlated wave function [PDF]

open access: yes, 2006
We present a density functional scheme for calculating the pair density (PD) by means of the correlated wave function. This scheme is free from both of problems related to PD functional theory, i.e., (a) the need to constrain the variational principle to
Higuchi, Katsuhiko, Higuchi, Masahiko
core   +4 more sources

Replicated Bethe Free Energy: A Variational Principle behind Survey Propagation

open access: yes, 2005
A scheme to provide various mean-field-type approximation algorithms is presented by employing the Bethe free energy formalism to a family of replicated systems in conjunction with analytical continuation with respect to the number of replicas.
Kabashima Y.   +15 more
core   +1 more source

Quantum Informational Dark Energy: Dark energy from forgetting

open access: yes, 2007
We suggest that dark energy has a quantum informational origin. Landauer's principle associated with the erasure of quantum information at a cosmic horizon implies the non-zero vacuum energy having effective negative pressure.
Eva K. Lee   +4 more
core   +1 more source

Dynamics of liquid nanofilms [PDF]

open access: yes, 2008
The van der Waals forces across a very thin liquid layer (nanofilm) in contact with a plane solid wall make the liquid nonhomogeneous. The dynamics of such flat liquid nanofilms is studied in isothermal case.
Batchelor   +25 more
core   +3 more sources

Is the free-energy principle neurocentric? [PDF]

open access: yesNature Reviews Neuroscience, 2010
Recently, a free-energy formulation of brain function was reviewed in relation to several other neurobiological theories (The freeenergy principle: a unified brain theory? Nature Rev. Neurosci. 11, 127–138 (2010))1. Fiorillo raises some interesting questions about the formulation from a neurocentric perspective (A neurocentric approach to Bayesian ...
openaire   +2 more sources

Towards a nonequilibrium thermodynamics: a self-contained macroscopic description of driven diffusive systems

open access: yes, 2008
In this paper we present a self-contained macroscopic description of diffusive systems interacting with boundary reservoirs and under the action of external fields.
A. De Sole   +28 more
core   +1 more source

The Hardy Uncertainty Principle Revisited

open access: yes, 2010
We give a real-variable proof of the Hardy uncertainty principle. The method is based on energy estimates for evolutions with positive viscosity, convexity properties of free waves with Gaussian decay at two different times, elliptic $L^2$-estimates and ...
Cowling, M.   +4 more
core   +1 more source

Multiscale Free Energy Analysis of Human Ecosystem Engineering

open access: yesEntropy, 2021
Unlike ecosystem engineering by other living things, which brings a relatively limited range of sensations that are connected to a few enduring survival preferences, human ecosystem engineering brings an increasing variety and frequency of novel ...
Stephen Fox
doaj   +1 more source

Reinforced Imitation Learning by Free Energy Principle

open access: yes, 2021
Reinforcement Learning (RL) requires a large amount of exploration especially in sparse-reward settings. Imitation Learning (IL) can learn from expert demonstrations without exploration, but it never exceeds the expert's performance and is also vulnerable to distributional shift between demonstration and execution.
Ogishima, Ryoya   +2 more
openaire   +2 more sources

Active Inference and Epistemic Value in Graphical Models

open access: yesFrontiers in Robotics and AI, 2022
The Free Energy Principle (FEP) postulates that biological agents perceive and interact with their environment in order to minimize a Variational Free Energy (VFE) with respect to a generative model of their environment. The inference of a policy (future
Thijs van de Laar   +5 more
doaj   +1 more source

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