3 papers
hep-th2025
Physical instabilities and the phase of the Euclidean path integral
Victor Ivo, Juan Maldacena, Zimo Sun
We compute the phase of the Euclidean gravity partition function on manifolds of the form . We find that the total phase is equal to the phase in pure gravity on $S…
hep-th2024
Real observers solving imaginary problems
Juan Maldacena
The sphere partition function is one of the simplest euclidean gravity computations. It is usually interpreted as count of states. However, the one loop gravity correction contains…
hep-th2024
The no boundary density matrix
Victor Ivo, Yue-Zhou Li, Juan Maldacena
We discuss a no-boundary proposal for a subregion of the universe. In the classical approximation, this density matrix involves finding a specific classical solution of the equatio…