Physics:Quantum methods/many-body: Difference between revisions

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{{Short description|Study of systems with many interacting particles}}
{{Short description|Study of systems with many interacting particles}}
{{Quantum book backlink|Field and many-body methods}}
{{Quantum methods backlink|Field and many-body methods}}
{{Quantum methods backlink|Field and many-body methods}}


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'''Many-body theory''' studies quantum systems consisting of a large number of interacting particles.
'''Many-body theory''' studies quantum systems consisting of a large number of interacting particles.


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<div style="font-size:90%;">Many-body systems exhibit collective behavior not present in single-particle systems.</div></div>
<div style="font-size:90%;">Many-body systems exhibit collective behavior not present in single-particle systems.</div></div>
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[[File:Quantum_field_theory_basics_light.jpg|thumb|280px|Quantum methods/many-body.]]
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== Overview ==
== Overview ==

Revision as of 15:50, 17 May 2026


← Back to Book:Quantum Collection Book I
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Many-body theory studies quantum systems consisting of a large number of interacting particles.

Many-body systems exhibit collective behavior not present in single-particle systems.
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Quantum methods/many-body.

Overview

Exact solutions are usually impossible, requiring approximation methods such as perturbation theory and numerical techniques.

Key concepts

  • Collective excitations
  • Quasiparticles
  • Emergent phenomena

Applications

Condensed matter physics, nuclear physics, and quantum computing.

See also

Table of contents (217 articles)

Index

Full contents

References


Author: Harold Foppele


Source attribution: Physics:Quantum Many-body theory

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