Discrete Models

Chapter
Part of the UNITEXT for Physics book series (UNITEXTPH)

Abstract

In some problems the states that mix in a significant way are few; then, the method of matrices lends itself to insightful (if qualitative) descriptions. The simplest model is \(2 \times 2\):
$$ H = \left( \begin{array}{ll} E_{a} &{} V, \\ V^{*} &{} E_{b} \end{array} \right) . $$

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Università di Roma Tor VergataRomeItaly

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