Questions tagged [disorder]
The disorder tag has no usage guidance.
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Why do we disorder-average before/after taking the logarithm of the partition function for annealed/quenched disorder?
Pg. 19 of these notes says
Crucially, the [disorder] average $\overline{\log Z}$ has to be computed after taking the logarithm. Such an average is called quenched ... Computing the average first, ...
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Physical understanding of Anderson (disorder) localisation
My current understanding is that waves in disordered potentials experience localisation due to interference effects. (eg an electron in a disordered medium tries to take different paths of effectively ...
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References for prerequisite material for understanding papers on Generalized Global Symmetries
I want to understand the papers https://arxiv.org/abs/1412.5148 and https://arxiv.org/abs/1703.00501. Assuming that I understand basics of gauge theories, could someone suggest some references ...
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Quenched systems - disorder average (SYK model)
In a system with quenched disorder one is usually looking for self-averaging quantities, i.e., quantities such that the average over the couplings produces a ``typical" configuration in the ...
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What are disorders in condensed matter parlance?
Condensed matter physicists often use the term disorder. What is a disorder? Is it some point defect or line defect? How are they modelled in a theory?
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Fractal structure in colloidal systems
In describing the configuration of a colloidal system, one often deals with either, disordered fluid states, disordered jammed states or crystalline states (so an underlying lattice structure), but in ...
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Are complexity and disorder correlated in entropy?
I am coming from the musical field, but I am looking into the topic of entropy.
In many articles from the field of physics, I keep finding what I consider a sort of misunderstanding, but I may be ...
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Derivation of the gradient expansion of the Keldysh nonlinear sigma model for disorder metals
My confusion relates to Appendix C of this this paper although the same derivation is presented in many others.
When deriving the gradient expansion of this term arrives at a term quadratic in the ...