## Encyclopedia of Physical Science and Technology, Volume 1 |

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Page 717

The density

used to describe the macroscopic state of classical systems. Thus, we say that

the macroscopic state of quantum systems is described by the density

The density

**operator**p is the quantum analog of the density distribution function pused to describe the macroscopic state of classical systems. Thus, we say that

the macroscopic state of quantum systems is described by the density

**operator**p.Page 736

The quantum Liouville equation given by Eq. (207) can be brought into a form

that more closely resembles the classical Liouville equation by introducing a

quantum Liouville

such a ...

The quantum Liouville equation given by Eq. (207) can be brought into a form

that more closely resembles the classical Liouville equation by introducing a

quantum Liouville

**operator**i: i = (l/ft)$- (208) where the**operator**9t is defined insuch a ...

Page 751

For this problem, the response function is given by <M') = P(JMJh(»)eq (348)

where 7„ is a current

response of the current in the p. direction to an instantaneous electric field

applied in the ...

For this problem, the response function is given by <M') = P(JMJh(»)eq (348)

where 7„ is a current

**operator**. The response function <£M,„(f) describes theresponse of the current in the p. direction to an instantaneous electric field

applied in the ...

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#### Encyclopedia of physical science and technology

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### Contents

Daniel Hillel | 303 |

Seismology Observational 17 Stochastic Description | 325 |

Seismology Theoretical 47 Solar Chimneys | 335 |

Copyright | |

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