Time dependent quadratic Hamiltonians and

2006 ◽  
Vol 355 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Paul Croxson
Keyword(s):  
Time Dependent ◽  
Quadratic Hamiltonians

scholarly journals Invariant Quantum States of Quadratic Hamiltonians

Entropy ◽  
2021 ◽  
Vol 23 (5) ◽  
pp. 634
Author(s):  
Viktor V. Dodonov
Keyword(s):  
Covariance Matrices ◽  
Quantum States ◽  
Time Dependent ◽  
General Solutions ◽  
Quadratic Hamiltonians ◽  
Invariant Quantum

The problem of finding covariance matrices that remain constant in time for arbitrary multi-dimensional quadratic Hamiltonians (including those with time-dependent coefficients) is considered. General solutions are obtained.

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