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Lectures On Spin Dynamics: The Theoretical Minimum
By
Giuseppe Pileio
Giuseppe Pileio
University of Southampton, UK
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Hardback ISBN:
978-1-83916-668-6
EPUB ISBN:
978-1-83916-673-0
PDF ISBN:
978-1-83767-087-1
Special Collection:
RSC eTextbook Collection
Product Type:
Textbooks
No. of Pages:
210
Publication date:
13 Jun 2022
Book Chapter
9: Lecture 9: The Density Operator
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Published:13 Jun 2022
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Special Collection: RSC eTextbook CollectionProduct Type: Textbooks
Page range:
105 - 117
Citation
Lectures On Spin Dynamics: The Theoretical Minimum, The Royal Society of Chemistry, 2022, pp. 105-117.
Download citation file:
In this lecture, I lay down the basics for the study of the dynamics of a large collection of identical spin systems by introducing the concept of a density operator and an equation for its evolution. Ensembles of spin systems represent macroscopic samples; in quantum mechanics, these can only be described in statistical terms through a density operator. This latter can be expressed in terms of spin angular momentum operators. The density operator allows all measurable properties of an ensemble of spin systems to be determined.
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