Lecturer: Dr. Yasha Neiman
Affiliation: Perimeter Institute for Theoretical
Physics
Abstract:
Elliptic de Sitter space is a maximally symmetric
spacetime that isn't time-orientable. Quantum
field theory in this spacetime does not exist
globally, but only for individual observers. This
provides a working model for Susskind's
horizon complementarity principle. I motivate a
recipe for translating states and observables
between the world-pictures of the different
observers. In particular, we recover the thermal
state at the cosmological horizon temperature
as a state on which all observers agree.
Additional details of the upcoming Joint Seminars
in Theoretical High Energy Physics can be found
on the following link