A variational principle for the density of states of random pseudodifferential operators, and its applications
β Scribed by T. E. Bogorodskaya; M. A. Shubin
- Publisher
- Springer US
- Year
- 1983
- Tongue
- English
- Weight
- 147 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0016-2663
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract A modified form of Frenkel's timeβdependent variation principle, suggested by McLachlan for state vectors, is employed to discuss the optimal time evolution of a density operator Ο(__t__). An __ansatz__ is made for this operator such that __i__(__d__Ο/__dt__) = [__S__, Ο], where __S__(_
## Abstract A general variational principle for transition and density matrices is proposed. The principle is closely related to Rowe's variational treatment of the equationsβofβmotion method. It permits the simultaneous construction of coupled approximations for two eigenstates, and it is a straig
A single variational principle can be used to determine the matimal entropy distribution, as well as to provide a bound on the uncertainty of the Lagrange multipliers due to scatter in the data. Both the distribution and the Lagrange multipliers are considered as variational parameters.