What Are Anyons and How Do They Fit Into Particle Types?

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Discussion Overview

The discussion centers around the concept of anyons and their classification alongside bosons and fermions in the context of particle types. Participants explore the statistical mechanics and theoretical implications of anyons, particularly in two-dimensional systems.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant mentions a probabilistic distribution related to particles, questioning the distribution for a potential third type of particle beyond bosons and fermions.
  • Another participant suggests looking into "anyons," noting that Frank Wilczek introduced the term in the context of two-dimensional field theories where the exclusion principle behaves differently.
  • A third participant references "generalized statistics" as a related concept to explore.
  • A later reply reiterates the suggestion to investigate anyons and elaborates on their nature as emergent excitations arising from many-body effects, linking them to fractional charge phenomena and referencing Schrieffer's work in superconductivity.

Areas of Agreement / Disagreement

Participants present multiple viewpoints regarding the classification of particles and the nature of anyons, indicating that the discussion remains unresolved with competing ideas and concepts being explored.

Contextual Notes

The discussion touches on complex theoretical concepts that may depend on specific definitions and assumptions related to particle statistics and dimensionality, which are not fully resolved in the conversation.

Kevin_spencer2
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Bosons, Fermions and ??

I have heard in wikipedia (a joke?? ) that appart from Bosons and Fermions (types of particles) there were another kind of 'Probabilistic distribution' ? i don't know how it was called but if we have the number of particles.

[tex]<n(T)>=\frac{1}{exp(\hbar \omega )-a}[/tex]

a=1 for Bosons and -1 for Fermions, if other kind of particles exist, what would be their distribution?, thanx.
 
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You might want to try looking into "anyons". Frank Wilczek coined the term for two dimensional field theories since the exclusion principle takes a different form in the reduced dimensions.
 
Try also with "generalized statistics".
 
StatMechGuy said:
You might want to try looking into "anyons". Frank Wilczek coined the term for two dimensional field theories since the exclusion principle takes a different form in the reduced dimensions.

In addition, note that as with the fractional charge phenomenon, anyons are also an "emergent" excitation that came out of the renormalized many-body effect. In http://arxiv.org/abs/cond-mat/0206122" , several references were made to Schrieffer's work (this is the "S" in BCS theory of superconductivity). Condensed matter systems are the ones that can clearly exhibit these fractional phenomena.

Zz.
 
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