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DOI: 10.5445/IR/1000079808

Chiral gauge theory and nontrivial spacetime topology: Lorentz and CPT violation

Ghosh, Kumar Jang Bahadur

Abstract:
In this dissertation, the effective gauge field action of the chiral gauge theory is calculated, which
is defined over a four-dimensional spacetime manifold (M = R³ x S¹) with one compactified coordinate.
The gauge fields and fermionic fields have periodic boundary conditions over the compact
dimension. The Abelian gauge-field configurations Aμ(x) can depend upon the compactified coordinate
x⁴ and have a vanishing component A₄. The existence of CPT (and Lorentz) violation
is derived perturbatively with a generalized Pauli-Villars regularization. For more justification,
the CPT anomaly is established nonperturbatively with a lattice regularization scheme based on
Ginsparg–Wilson fermions.


Zugehörige Institution(en) am KIT Institut für Theoretische Physik (ITP)
Publikationstyp Hochschulschrift
Jahr 2018
Sprache Englisch
Identifikator URN: urn:nbn:de:swb:90-798081
KITopen ID: 1000079808
Verlag Karlsruhe
Umfang 82 S.
Abschlussart Dissertation
Fakultät Fakultät für Physik (PHYSIK)
Institut Institut für Theoretische Physik (ITP)
Prüfungsdatum 22.12.2017
Referent/Betreuer Prof. F. Klinkhamer
Schlagworte Spacetime topology, chiral gauge theory, anomaly, Lorentz violation, CPT violation.
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