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Universidad de Granada CAFPE

Seminario: The metric may (not) be the foundation of all, and particle physics could tell

Ponente: Adria Delhom Latorre, Universidad de Valencia

Lugar: Seminario del Dpto Física Teórica y del Cosmos

Fecha: 08/02/2018

Hora (24h): 12:00

Resumen:
Relaxing the Riemannian condition to incorporate geometric quantities such as torsion and non- metricity may allow to explore new physics associated with defects in a hypothetical space-time microstructure. Here we will first discuss the definition of conserved currents and charges in a non- RIemannian space, pionting out how the values of physical charges (electric charge, color charge, etc) might depart from their usual Riemannian values. After this is clear, we will see how non-metricity produces observable efects in quantum fields in the form of 4-fermion contact interactions, thereby allowing us to constrain the scale of non-metricity to be greater than 1 TeV by using results on Bahbah scattering. Our analysis is carried out in the framework of a wide class of theories of gravity in the metric-ane approach. The bound obtained represents an improvement of several orders of magnitude to previous experimental constraints.