Time in Quantum Theory (TiQT) 2026

Session

Quantum Gravity

28 May 2026, 09:00

Albano 3: 4204 - SU Conference Room (56 seats) (Albano Building 3)

41. From Heat Engines to Cosmology

Dr Lucy James (University of Bonn)

28/05/2026, 09:00

Invited Talk

This talk raises several issues with standard explanations of time asymmetry, which assume a universally applicable statistical mechanical version of the second law of thermodynamics with a past hypothesis. The theme of criticism concerns the conceptual shifts which take place as thermodynamic entropy is reduced and the resulting definition (I focus on Boltzmann's) migrates between contexts....

24. Gravitational self-interaction mitigates superluminal signalling

Mrs Julia Osęka-Lenart (Astronomical Observatory, Jagiellonian University)

28/05/2026, 10:20

Talk

The Schrödinger–Newton equation aims at describing the dynamics of massive quantum systems subject to the gravitational self-interaction. As a deterministic nonlinear quantum wave equation, it is generally believed to conflict with the relativistic no-signalling principle. Here I challenge this viewpoint and show that it is of a key importance to study the quantitative and operational...

3. Time dilation from entropy and purity

Prof. Martin Bojowald (The Pennsylvania State University)

28/05/2026, 10:40

Talk

A quantum object is extended by virtue of uncertainty.  When subjected to gravity, different parts of its wave function experience distinct local relativistic effects, leading to tidal and interference phenomena absent in the classical limit. These effects can be incorporated into a geometric extension of classical spacetime. For states that are quantum correlated in at least two directions, a...