Dirac Operators on Configuration Spaces: Fermions with Half-integer Spin, Real Structure, and Yang–Mills Quantum Field Theory

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OriginalspracheEnglisch
FachzeitschriftFortschritte der Physik
Frühes Online-Datum3 Feb. 2025
PublikationsstatusElektronisch veröffentlicht (E-Pub) - 3 Feb. 2025

Abstract

In this paper, the development of a spectral triple-like construction on a configuration space of gauge connections is continued. It has previously been shown that key elements of bosonic and fermionic quantum field theory emerge from such a geometrical framework. In this paper, a central problem concerning the inclusion of fermions with half-integer spin into this framework is solved. The tangent space of the configuration space is mapped into a similar space based on spinors, and this map is used to construct a Dirac operator on the configuration space. A real structure acting in a Hilbert space over the configuration space is also constructed. Finally, it is shown that the self-dual and anti-self-dual sectors of the Hamiltonian of a nonperturbative quantum Yang-Mills theory emerge from a unitary transformation of a Dirac equation on a configuration space of gauge fields. The dual and anti-dual sectors are shown to emerge in a two-by-two matrix structure.

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Dirac Operators on Configuration Spaces: Fermions with Half-integer Spin, Real Structure, and Yang–Mills Quantum Field Theory. / Aastrup, Johannes; Grimstrup, Jesper Møller.
in: Fortschritte der Physik, 03.02.2025.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

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