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The Real Symplectic Groups in Quantum Mechanics and Optics

Arvind, * and Dutta, B and Mukunda, N and Simon, R (1995) The Real Symplectic Groups in Quantum Mechanics and Optics. [Preprint]

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Abstract

We present a utilitarian review of the family of matrix groups $Sp(2n,\Re)$, in a form suited to various applications both in optics and quantum mechanics. We contrast these groups and their geometry with the much more familiar Euclidean and unitary geometries. Both the properties of finite group elements and of the Lie algebra are studied, and special attention is paid to the so-called unitary metaplectic representation of $Sp(2n,\Re)$. Global decomposition theorems, interesting subgroups and their generators are described. Turning to $n$-mode quantum systems, we define and study their variance matrices in general states, the implications of the Heisenberg uncertainty principles, and develop a U(n)-invariant squeezing criterion. The particular properties of Wigner distributions and Gaussian pure state wavefunctions under $Sp(2n,\Re)$ action are delineated.)

Item Type: Preprint
Additional Information: Pramana 45 (1995) 471
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Division of Physical & Mathematical Sciences > Centre for Theoretical Studies
Date Deposited: 31 Jul 2004
Last Modified: 19 Sep 2010 04:13
URI: http://eprints.iisc.ernet.in/id/eprint/905

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