GeomGravX: 10 Years of Geometric Foundations of Gravity and eXtensions (in Tartu)

Session

Tuesday Parallel A1

30 Jun 2026, 13:30

A106 (Physicum, University of Tartu)

94. Filippo Contino: Vacuum stability in Geometric Trinity of Gravity

30/06/2026, 13:30

The decay of a metastable (false) vacuum is a crucial non-perturbative phenomenon, as it plays an important role in constraining Standard Model and beyond the Standard Model physics. In particular, it has been shown that gravity can have a significant impact on the calculation of the decay rate. In this context, it is natural to ask whether different but classically equivalent formulations of...

95. Sebastian Schuster: Geometric Foundations in and beyond Gravity—The Perspective of Particle Detector Models

30/06/2026, 13:55

Already in general relativity, much of the most interesting physics has to do with semi-classical extensions and their physical effects. Early on, foundational issues were addressed through the introduction of the Unruh–DeWitt detect model which allowed an operational notion of particle detection. This described the then-recently discovered, semi-classical effects—like the Unruh effect and...

96. Jakob Palmkvist: The algebraic structure of gravity

30/06/2026, 14:20

2

It has been known since 1998 that the dynamics of the bosonic form fields in supergravity can be formulated as a twisted first-order self-duality relation in a Lie superalgebra. I will extend the formalism to the gravity sector and describe how Einstein's equations in vacuum can be derived in a similar way. Conversely, diffeomorphisms can be generalised and unified with gauge transformations...

97. Armin van de Venn: Information Geometry from Divergences

30/06/2026, 14:45

We present information geometry from the perspective of divergences, which define a generally asymmetric notion of separation. From this starting point, we show how both the metric tensor and affine connection naturally emerge, and we emphasize the role of nonmetricity in this framework. Within this setting, we demonstrate that a Brownian bridge subject to a canonical physical constraint...

121. Tomi Koivisto: More on the physical foundations of geometry

30/06/2026, 15:10

1

The series of breakthroughs witnessed at the previous conferences erupted last summer into a full-scale revolution. Presently the foundations of physics and of all sciences are shaken by a kaleidoscopic turmoil. This is a moment at which to revisit the main theme of the conference series.
Physics cannot rest on a geometrical foundation. The fact that geometrical descriptions are available is...