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hep-th2025
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…
hep-th2024
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…