У оквиру семинара Института за физику у Београду, у среду, 19. фебруара 2025. године у 12 часова путем Zoom платформе, Душан Ђорђевић (Физички факултет, Универзитет у Београду) одржаће предавање:
The role of torsion in holographic conductivity
САЖЕТАК:
Generalizing the usual setup for holographic duality, where bulk spacetime is described by pseudo Riemannian geometry, we consider a Riemann-Cartan bulk with non-trivial torsion as a background for an
electromagnetic gauge field dual to U(1) boundary current. Working in the probe limit, we explore how the bulk torsion, which induces spin current at the boundary, affects the electric conductivity of the boundary theory. We consider standard types of non-minimal couplings between torsion and the electromagnetic field found in the literature, and the results indicate that these torsion couplings are more suitable candidates, compared to the common minimal coupling regime, for a holographic description of the existing experimental findings regarding conductivity.
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Meeting ID: 925 7980 1538
Passcode: 570456
* Душан Ђорђевић ће одржати и предавање „QFT on Fuzzy AdS Spaces: Classical Limit and Boundary Correlation Functions“ 14. фебруара 2025. године у Институту за физику у Београду