Драган Прекрат

01. фебруара 2022.

У оквиру семинара Групе за гравитацију, честице и поља Института за физику у Београду, у петак, 18. фебруара 2022. године у 11 часова путем BigBlueButton платформе, Драган Прекрат (Физички факултет у Београду), одржаће предавање:

Phase transitions in matrix models on the truncated Heisenberg space


The important generic problem with QFTs on noncommutative spaces is the UV/IR mixing of divergences which interferes with their renormalization. The Grosse-Wulkenhaar model solved this problem by introducing a harmonic oscillator term that can be interpreted as a coupling between the curvature and the field. In this talk, we will examine the success of this model from the phase transition point of view. We will show that renormalizable and nonrenormalizable versions of the 2D noncommutative phi4 model have different phase diagrams.
We will also consider the implications of the striped-phase shifting on the renormalization properties of other models.

arXiv:2104.00657 [hep-th]
arXiv:2002.05704 [hep-th]

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