In order to solve the master equation by a systematic approximation method, an expansion
in powers of some parameter is needed. The appropriate parameter is the reciprocal size of …

The correct form of the diffusion equation in the case of an inhomogeneous medium, whose
temperature may also vary in space, has been the subject of some debate. As no universal …

The problem is to establish the correct diffusion equation in a medium that is inhomogeneous
and whose temperature also varies in space. As a special model we study particles whose …

The spontaneous fluctuations of a system with a non-linear decay law are investigated
analytically by means of a model which is a significant generalization of the ‘Rayleigh particle’. …

The Ω-expansion of the master equation for Markov processes may either lead to a non-diffusive
or, under certain conditions, to a diffusive type of approximation. In the fist case …

The analysis of Part I is extended to the case in which both even and odd variables are
needed to describe the macroscopic state of a system. In linear approximation this leads to the …

The Onsager relations have been derived in a quantum statistical treatment of irreversible
processes for scalar phenomena. In this paper the problem of deriving reciprocal relations …

Instituut de plaats waar ik mij bevinde, de stad, die mij tot haren inwoner heeft opgenomen,
voor mijnen geest brenge, zoo wordt mijn gemoed bestormd door eene mengeling van …

[en] The collapse of the wave function of an object upon interaction with a measuring system
is discussed. With the help of a simple example it is argued that the collapse of the wave …

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