منابع مشابه
The topological realization of a simplicial presheaf
While preparing for EUROPROJ’s Trento school on stacks (September 1996) it became apparent that an obvious thing that one would like to say about a stack—to take its topological realization—was not altogether obvious to define or to handle. The same question can be posed more generally for a presheaf of spaces or (as it is common to say) a simplicial presheaf. We give a definition of the topolo...
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We study the equivariant cohomology of a class of multi-field topological Landau-Ginzburg models, and find that such systems carry intrinsic information about W -gravity. As a result, we can construct the gravitational chiral ring in terms of LG polynomials. We find, in particular, that the spectrum of such theories seems to be richer than so far expected. We also briefly discuss the BRST opera...
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It is well known that a bosonic Mott insulator can be realized by condensing vortices of a boson condensate. Usually, a vortex becomes an antivortex (and vice versa) under time reversal symmetry, and the condensation of vortices results in a trivial Mott insulator. However, if each vortex or antivortex interacts with a spin trapped at its core, the time reversal transformation of the composite ...
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ژورنال
عنوان ژورنال: Synthese
سال: 2016
ISSN: 0039-7857,1573-0964
DOI: 10.1007/s11229-016-1248-0