Categoria: General Solving the strong CP problem with modular invariance - Dr Arsenii Titov (Padova University)

Solving the strong CP problem with modular invariance - Dr Arsenii Titov (Padova University)


Febbraio 19, 2025

seminario di fisica teorica
Abstract: We formulate general conditions under which the strong CP problem is solved by spontaneous CP violation. Quark mass matrix elements are polynomials in the CP-breaking order parameters, engineered such that their determinant is a real constant. These conditions can be realised in supersymmetric theories with an anomaly-free local flavour symmetry, suggesting a unified solution to the strong CP problem and the flavour puzzle.
Our solution can be implemented using either a local U(1) symmetry or modular invariance. We present concrete modular-invariant realisations. Heavy vector-like quarks are in general not required, but their presence allows for models where coloured particles fill non-singlet representations of the finite modular <a href="http://groups.

" target="_blank" title="groups.

">groups.

aula 501

Vedi il calendario completo