نتایج جستجو برای: statistical thermodynamics

تعداد نتایج: 398177  

Journal: :Advances in Physics 2023

This review is a simplified summary of the thermodynamic dislocation theory, with special emphasis on role an effective temperature. Materials scientists, for decades, have asserted that statistical thermodynamics not applicable to dislocations. By use simple, first-principles analyses and comparisons experimental data, I argue these scientists been wrong, this venerable field urgently needs be...

Journal: :Physical review letters 2014
Alex H Lang Charles K Fisher Thierry Mora Pankaj Mehta

The deep connection between thermodynamics, computation, and information is now well established both theoretically and experimentally. Here, we extend these ideas to show that thermodynamics also places fundamental constraints on statistical estimation and learning. To do so, we investigate the constraints placed by (nonequilibrium) thermodynamics on the ability of biochemical signaling networ...

2009
Hernando Quevedo Maŕıa-Nubia Quevedo

We formulate thermodynamics of economic systems in terms of an arbitrary probability distribution for a conserved economic quantity. As in statistical physics, thermodynamic macroeconomic variables emerge as the mean value of microeconomic variables and their determination is reduced to the computation of the partition function, starting from an arbitrary function. Explicit hypothetical example...

2014
William R. Cannon

New methods are needed for large scale modeling of metabolism that predict metabolite levels and characterize the thermodynamics of individual reactions and pathways. Current approaches use either kinetic simulations, which are difficult to extend to large networks of reactions because of the need for rate constants, or flux-based methods, which have a large number of feasible solutions because...

2005
BRUNO LINDER

No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per...

2002
Davide Marini

For the purpose of thermodynamics, the universe is divided into two parts: a system and its surroundings. The system is that part of the world in which we have a special interest (e.g. a glass of water or a cell); the surroundings are where we make our observations. Work, heat and energy are the basic concepts of thermodynamics. The most fundamental of these concepts is work: all measurements o...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2014
Themis Matsoukas

We present a thermodynamic theory for a generic population of M individuals distributed into N groups (clusters). We construct the ensemble of all distributions with fixed M and N, introduce a selection functional that embodies the physics that governs the population, and obtain the distribution that emerges in the scaling limit as the most probable among all distributions consistent with the g...

Journal: :Entropy 2017
Robert H. Swendsen

The proper definition of thermodynamics and the thermodynamic entropy is discussed in the light of recent developments. The postulates for thermodynamics are examined critically, and some modifications are suggested to allow for the inclusion of long-range forces (within a system), inhomogeneous systems with non-extensive entropy, and systems that can have negative temperatures. Only the thermo...

Journal: :Physical review letters 2013
Greg J Stephens Thierry Mora Gašper Tkačik William Bialek

The scale invariance of natural images suggests an analogy to the statistical mechanics of physical systems at a critical point. Here we examine the distribution of pixels in small image patches and show how to construct the corresponding thermodynamics. We find evidence for criticality in a diverging specific heat, which corresponds to large fluctuations in how "surprising" we find individual ...

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