Quantum Theory of Many-Body Systems
Techniques and Applications
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Alexandre M. Zagoskin
Quantum Information Technology, Spintronics
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Article
Open AccessQuantum metamaterials in the microwave and optical ranges
Quantum metamaterials generalize the concept of metamaterials (artificial optical media) to the case when their optical properties are determined by the interplay of quantum effects in the constituent ‘artific...
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Book
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Chapter
Green’s Functions at Zero Temperature
When we discussed one-particle states in the second quantization representation, from the formally mathematical point of view any complete set of functions dependent on the coordinates (spin, etc.) of one particl...
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Chapter
Methods of the Many-Body Theory in Superconductivity
The discovery of superconductivity by Kamerlingh Onnes in 1911 was a real challenge for contemporary physical theory. The theory of metals developed by Drude on the basis of classical statistical physics, whil...
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Chapter
Basic Concepts
Technically speaking, physics deals only with one-body and many-body problems (because the two-body problem reduces to the one-body case, and the three-body problem does not, and is already insolvable). Still,...
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Chapter
More Green’s Functions, Equilibrium and Otherwise, and Their Applications
The formalism we have developed so far is limited to zero temperature (i.e., to the ground state) properties of many-body systems. As you remember, this is because the ground state is always nondegenerate, so ...
