Results 21 to 30 of about 5,295,129 (293)

Computing the Absolute Gibbs Free Energy in Atomistic Simulations: Applications to Defects in Solids [PDF]

open access: yes, 2017
The Gibbs free energy is the fundamental thermodynamic potential underlying the relative stability of different states of matter under constant-pressure conditions. However, computing this quantity from atomic-scale simulations is far from trivial.
Ceriotti, Michele, Cheng, Bingqing
core   +2 more sources

Hole dynamics in a photovoltaic donor-acceptor couple revealed by simulated time-resolved X-ray absorption spectroscopy

open access: yesStructural Dynamics, 2019
Theoretical and experimental methodologies that can characterize electronic and nuclear dynamics, and the coupling between the two, are needed to understand photoinduced charge transfer in molecular building blocks used in organic photovoltaics.
Khadijeh Khalili   +5 more
doaj   +1 more source

The Effect of the Protein Synthesis Entropy Reduction on the Cell Size Regulation and Division Size of Unicellular Organisms

open access: yesEntropy, 2022
The underlying mechanism determining the size of a particular cell is one of the fundamental unknowns in cell biology. Here, using a new approach that could be used for most of unicellular species, we show that the protein synthesis and cell size are ...
Mohammad Razavi   +2 more
doaj   +1 more source

Inquiries into the Nature of Free Energy and Entropy in Respect to Biochemical Thermodynamics [PDF]

open access: yes, 2000
Free energy and entropy are examined in detail from the standpoint of classical thermodynamics. The approach is logically based on the fact that thermodynamic work is mediated by thermal energy through the tendency for nonthermal energy to convert ...
Barnes   +43 more
core   +4 more sources

Free-energy and the brain

open access: yesSynthese, 2007
If one formulates Helmholtz's ideas about perception in terms of modern-day theories one arrives at a model of perceptual inference and learning that can explain a remarkable range of neurobiological facts. Using constructs from statistical physics it can be shown that the problems of inferring what cause our sensory input and learning causal ...
Karl J. Friston, Klaas E. Stephan
openaire   +3 more sources

Entropy Pair Functional Theory: Direct Entropy Evaluation Spanning Phase Transitions

open access: yesEntropy, 2021
We prove that, within the class of pair potential Hamiltonians, the excess entropy is a universal, temperature-independent functional of the density and pair correlation function. This result extends Henderson’s theorem, which states that the free energy
Donald M. Nicholson   +4 more
doaj   +1 more source

Asymptotically Free Partons at High Energy [PDF]

open access: yes, 1997
We describe the application of renormalization group improved perturbative QCD to inelastic lepton-hadron scattering at high center-of-mass energy but comparatively low photon virtuality. We construct a high energy factorization theorem which complements
't Hooft   +52 more
core   +2 more sources

Thermodynamic Integration in 3n Dimensions Without Biases or Alchemy for Protein Interactions

open access: yesFrontiers in Physics, 2020
Thermodynamic integration (TI), a powerful formalism for computing Gibbs free energy, has been implemented for many biophysical processes with alchemical schemes that require delicate human efforts to choose/design biasing potentials for sampling the ...
Liao Y. Chen
doaj   +1 more source

Free-energy calculations [PDF]

open access: yes, 2002
The techniques that can be used to study phase diagrams numerically depend on the character of the phase transitions. In particular, there is quite a difference among the tools used to study first-order phase transitions and those applied to analyze critical phenomena near continuous phase transitions.
Daan Frenkel, Berend Smit
openaire   +1 more source

A determination of interface free energies [PDF]

open access: yesNuclear Physics B, 1994
We determine the interface free energy $F_{o.d.}$ between disordered and ordered phases in the q=10 and q=20 2-d Potts models using the results of multicanonical Monte Carlo simulations on $L^2$ lattices, and suitable finite volume estimators. Our results, when extrapolated to the infinite volume limit, agree to high precision with recent analytical ...
BILLOIRE, A, Neuhaus, Thomas, BERG, BA
openaire   +3 more sources

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