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{{Short description|High-temperature expansion in statistical mechanics}} ...eory around a model that is a union of non-interacting 0-dimensional field theories. Unlike the usual [[perturbation theory|perturbation expansion]] which usua ...

...ken]]. The theorem was first proved in 1975 by Shmuel Elitzur in [[lattice field theory]],<ref>{{cite journal|last1=Elitzur|first1=S.|authorlink1=|date=1975 A field theory admits different types of [[symmetry (physics)|symmetries]], with th ...

{{Short description|Two dimensional conformal field theory}} ...p.org/article/10.1088/1751-8113/47/45/452001|title=Parafermionic conformal field theory on the lattice|first1=Roger S K|last1=Mong|first2=David J|last2=Clar ...

{{Short description|Set of values in statistical physics}} ...xponent]]s''' of the ferromagnetic transition in the [[Ising model]]. In [[statistical physics]], the Ising model is the simplest system exhibiting a continuous [ ...

| field = [[Mathematics]], [[Physics]] ...earch on [[quantum field theory]], [[statistical physics]] and [[conformal field theory]] ...

...functional transformation. [[Computer simulation]]s based on polymer field theories have been shown to deliver useful results, for example to calculate the str ...disperse homopolymers as a system of coarse-grained polymers, in which the statistical mechanics of the chains is described by the continuous Gaussian thread mode ...

| subjects = Thermodynamics <br /> Statistical Mechanics ...]. Afterwards, the different [[Statistical ensemble (mathematical physics)|statistical ensembles]] are discussed from which the [[Thermodynamic potential|thermody ...

...enormalization Group, Tree Expansion, and Non-renormalizable Quantum Field Theories ...erties of [[integrable]] models of [[statistical mechanics]] and [[quantum field theory]].<ref>{{cite web|title=Felder, Giovanni, Prof. Dr.|website=ETH Züri ...

{{Short description|Physics model in statistical mechanics}} ...the ''quantum'' Gaudin model, is a model, or a large class of models, in [[statistical mechanics]] first described in its simplest case by [[Michel Gaudin (physic ...

...20</ref> In 1974–1975 he did research at Harvard on [[constructive quantum field theory]] and was from 1975 to 1977 a [[C.L.E. Moore instructor|Moore Instru Feldman works on constructive quantum field theory (with some work in collaboration with Vincent Rivasseau, [[Konrad Os ...

...ly when normal [[experience]] fails), rather than as a tool in formalizing theories. This links to the question of it using mathematics in a less formally rigo ...research (sub)fields and programmes. Examples: relativity theory, quantum field theory, string theory.</ref> ...

...projections along the <math>z</math> axis, as well as an external magnetic field perpendicular to the <math>z</math> axis (without loss of generality, along ...That is, they cannot both be observed simultaneously. This means classical statistical mechanics cannot describe this model, and a quantum treatment is needed. ...

...in Russia) with thesis ''Completely integrable models of field theory and statistical mechanics''. ...Warsaw and gave a talk titled ''Integrable models in classical and quantum field theory''. ...

| field = [[Mathematics]]<br>[[Mathematical physics]]<br> ...ibutions to mathematics and the mathematically rigorous study of [[quantum field theory]]. ...

{{Short description|2D conformal field theories}} ...f [[two-dimensional conformal field theory|two-dimensional conformal field theories]], whose symmetry is described by an abelian [[affine Lie algebra]]. ...

...]] [[Euclidean space|Euclidean]] temporal direction of a [[thermal quantum field theory]]. It indicates confinement because its [[vacuum expectation value]] ...=16|pages=456–459|isbn=978-3642331046}}</ref> In <math>\text{SU}(N)</math> theories a straight Polyakov loop on a spatial coordinate <math>\boldsymbol x</math> ...

...y interacting systems. The method combines functional methods of [[quantum field theory]] with the intuitive renormalization group idea of [[Kenneth G. Wils ...ions, can be straightforwardly extracted from it. In a generic interacting field theory the effective action <math>\Gamma</math>, however, is difficult to o ...

...ween the [[Entropy of entanglement|entanglement entropy]] of a [[conformal field theory]] and the geometry of an associated [[Anti-de Sitter space|anti-de S ...e in Fundamental Physics]] for "fundamental ideas about entropy in quantum field theory and quantum gravity",<ref> ...

...=1971 |title=Invariant variation problems |journal=[[Transport Theory and Statistical Physics]] |volume=1 |issue=3 |pages=186–207 |arxiv=physics/0503066 |bi ...eories are the basic elements of all modern [[field theory (physics)|field theories]] of physics, such as the prevailing [[Standard Model]]. ...

...urmise was a result of Wigner's introduction of [[random matrices]] in the field of [[nuclear physics]]. The surmise consists of two postulates: ...E. |url=https://books.google.com/books?id=b2VJAAAACAAJ |title=Statistical Theories of Spectra: Fluctuations |date=1965 |publisher=Elsevier Science & Technolog ...