### Abstract

Lingua originale | English |
---|---|

pagine (da-a) | 2730-2747 |

Numero di pagine | 18 |

Rivista | Journal of Mathematical Physics |

Volume | 39 |

Stato di pubblicazione | Published - 1998 |

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### All Science Journal Classification (ASJC) codes

- Statistical and Nonlinear Physics
- Mathematical Physics

### Cita questo

*Journal of Mathematical Physics*,

*39*, 2730-2747.

**New structures in the theory of the laser model. II. Microscopic dynamics and a nonequilibrium entropy principle.** / Bagarello, Fabio; Bagarello, Fabio; Sewell, Geoffrey L.

Risultato della ricerca: Article

*Journal of Mathematical Physics*, vol. 39, pagg. 2730-2747.

}

TY - JOUR

T1 - New structures in the theory of the laser model. II. Microscopic dynamics and a nonequilibrium entropy principle

AU - Bagarello, Fabio

AU - Bagarello, Fabio

AU - Sewell, Geoffrey L.

PY - 1998

Y1 - 1998

N2 - In a recent article, Alli and Sewell [J. Math. Phys. 36, 5598 (1995)] formulated a new version of the Dicke-Hepp-Lieb laser model in terms of quantum dynamical semigroups, and thereby extended the macroscopic picture of the model. In the present article, we complement that picture with a corresponding microscopic one, which carries the following new results. (a) The local microscopic dynamics of the model is piloted by the classical, macroscopic field, generated by the collective action of its components; (b) the global state of the system carries no correlations between its constituent atoms after transient effects have died out; and (c) in the latter situation, the state of the system at any time t maximizes its entropy density, subject to the constraints imposed by the instantaneous values of its macroscopic variables. © 1998 American Institute of Physics.

AB - In a recent article, Alli and Sewell [J. Math. Phys. 36, 5598 (1995)] formulated a new version of the Dicke-Hepp-Lieb laser model in terms of quantum dynamical semigroups, and thereby extended the macroscopic picture of the model. In the present article, we complement that picture with a corresponding microscopic one, which carries the following new results. (a) The local microscopic dynamics of the model is piloted by the classical, macroscopic field, generated by the collective action of its components; (b) the global state of the system carries no correlations between its constituent atoms after transient effects have died out; and (c) in the latter situation, the state of the system at any time t maximizes its entropy density, subject to the constraints imposed by the instantaneous values of its macroscopic variables. © 1998 American Institute of Physics.

UR - http://hdl.handle.net/10447/198786

UR - https://aip.scitation.org/doi/abs/10.1063/1.532417

M3 - Article

VL - 39

SP - 2730

EP - 2747

JO - Journal of Mathematical Physics

JF - Journal of Mathematical Physics

SN - 0022-2488

ER -