12 citations · 14 across the 5 of their papers we have counts for
5 papers
Long-lived SEC violation via DM/DE couplings
Gary Shiu, Flavio Tonioni, Hung V. Tran
We discuss a cosmological scenario where an effective violation of the strong energy condition (SEC) is realized through a coupling between SEC-fulfilling dark matter (DM) and dark…
Analytic bounds on late-time axion-scalar cosmologies
Gary Shiu, Flavio Tonioni, Hung V. Tran
The cosmological dynamics of multiple scalar/pseudoscalar fields are difficult to solve, especially when the field-space metric is curved. This presents a challenge in determining…
Collapsing universe before time
Gary Shiu, Flavio Tonioni, Hung V. Tran
In this note, we prove analytic bounds on the equation of state of a cosmological fluid composed of an arbitrary number of canonical scalars evolving in a negative multi-exponentia…
Connecting flux vacua through scalar field excursions
Gary Shiu, Flavio Tonioni, Vincent Van Hemelryck +1
We show how flux vacua that differ from each other in flux quanta can be seen as different vacua in a single scalar potential of an enlarged field space, which resolves the separat…
Super-Resolution Emulation of Large Cosmological Fields with a 3D Conditional Diffusion Model
Adam Rouhiainen, Michael Gira, Moritz Münchmeyer +2
High-resolution (HR) simulations in cosmology, in particular when including baryons, can take millions of CPU hours. On the other hand, low-resolution (LR) dark matter simulations…