Early Universe cosmology, cosmic inflation, primordial black holes, gravitational waves.

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2. Joana, C. “Gravitational dynamics of Higgs inflation: Preinflation and pre-heating with an auxiliary field”, Phys. Rev. D, vol. 106, pp. 023504 (2022).

arXiv:2202.07604

3. Joana, C. “Beginning inflation in non-conformally flat spacetimes”, Phys.Rev.D 110 (2024) 6, 063534, arXiv:2406.00811

4. Inui, R., Joana, C. Motohashi, H., Pi, S., Tada, Y., Yokoyama, S., “Primordial black holes and induced gravitational waves from logarithmic non-Gaussianity”, J. Cosmol. Astropart. Phys. 2025 021, arXiv:2411.07647

5. Yuwen, Z-Y., Joana, C, Wang S-H, Cai R-G., ”Bubbles kick off primordial black holes to form more binaries”, Phys. Rev. Res. 7, no.2, 023180 (2025), arXiv:2406.05838

6. Joana, C., Yuwen, Z-Y., “Primordial black holes from primordial voids”, Phys.Rev.D 113 (2026) 2, 023518, arXiv: 1025.11611