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arXiv 0811.2267math.AT
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超对称域论与上同调

Supersymmetric field theories and cohomology

Pokman Cheung

摘要:

这是博士作者的论文。该项目的动机是猜想,霍普金-米勒tmf频谱可以描述的“空间”的共形域论。本文将域论空间构造为以某种类型的域论为对象的范畴的分类空间。如果这样一个范畴具有一个对称的么半群结构,并且它的组成部分形成一个群,那么根据Segal的工作,它的分类空间是一个无限闭路空间,并且定义了一个上同调理论。这已对两类域论进行了研究:(i)对于每个整数n,存在一个范畴SEFT_n,其对象是Stolz-Teichner(1| 1)维n次超欧几里德域论。证明了分类空间|SEFT_n|表示n次K或KO上同调,依赖于域论的系数. (ii)对于每个整数n,存在一个范畴AFT_n,其对象是一类(2| 1)维域论,称为“环形域论”,只使用超几何形式的圆和圆环来定义。证明了分类空间|AFT_n|表示与Tate曲线相关的n次椭圆上同调。据作者所知,这是第一次详细地给出低维超对称域论的定义。

英文摘要:

This is the Ph.D. dissertation of the author. The project has been motivated by the conjecture that the Hopkins-Miller tmf spectrum can be described in terms of `spaces' of conformal field theories. In this dissertation, spaces of field theories are constructed as classifying spaces of categories whose objects are certain types of field theories. If such a category has a symmetric monoidal structure and its components form a group, by work of Segal, its classifying space is an infinite loop space and defines a cohomology theory. This has been carried out for two classes of field theories: (i) For each integer n, there is a category SEFT_n whose objects are the Stolz-Teichner (1|1)-dimensional super Euclidean field theories of degree n. It is proved that the classifying space |SEFT_n| represents degree-n K or KO cohomology, depending on the coefficients of the field theories. (ii) For each integer n, there is a category AFT_n whose objects are a kind of (2|1)-dimensional field theories called `annular field theories,' defined using supergeometric versions of circles and annuli only. It is proved that the classifying space |AFT_n| represents the degree-n elliptic cohomology associated with the Tate curve. To the author's knowledge, this is the first time the definitions of low-dimensional supersymmetric field theories are given in full detail.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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