[hep-th] GPF seminar, 26th September

[Maja Buric]

Dear colleagues,

the next GPF seminar will be given by Pavle Stipsic on Friday,
26th September at 11.15, at the small seminar room on the second
floor of IPB.


Title:
Correspondence between 3BF and Einstein-Cartan formulations of quantum 
gravity

Abstract:
We construct a correspondence between the quantized constrained 3BF theory 
and the quantized Einstein-Cartan theory with contact
spin-spin interaction, both of which describe the Standard Model coupled 
to Einstein-Cartan gravitational field. First we
introduce the expectation values of observables using the path integral 
formalism for both theories, and then by integrating out
some configuration space variables in the quantum 3BF theory we obtain the 
definition of the corresponding observable in the
quantum Einstein-Cartan theory with contact interaction. Finally, we 
discuss the differences in the predictions of the two
theories on the example of the 4-volume density of spacetime, and on the 
example of gravitational waves.


Link:
https://gravityserver.ipb.ac.rs/b/mar-ae0-f4q-qww


Best regards,
Maja Buric