3 papers
hep-th2026
Coherent states versus Glauber-Sudarshan States: Bootstrapping, Schwinger-Keldysh Contours and Lefschetz Thimbles
Heliudson Bernardo, Tatsuya Daniel, Keshav Dasgupta +3
We investigate how, in a highly constrained system such as a four-dimensional diffeomorphism-invariant theory with vanishing bulk Hamiltonian and non-trivial interactions between t…
hep-th2026
Branching Universes
Anamaria Hell, Tatsuya Daniel
We propose the idea that our Universe is a realization among different possible branches, which can be observationally tested through the modified dispersion relation of the gravit…
astro-ph.CO2026
Reheating with Axion-SU(2) and Gravitational Chern-Simons Couplings
Tatsuya Daniel, Vahid Kamali
We study the early stages of an oscillatory reheating phase in an inflaton plus spectator axion-SU(2) system, including both an axion-gauge Chern-Simons coupling and…