Dimensional reduction issue of a six-dimensional Kaluza-Klein theory @ The 50th Vietnam Conference on Theoretical Physics (VCTP-50), Da Lat, 04 - 07 August 2025 [Link],
Is a stable anisotropic inflation viable? @ International Symposium on Cosmology and Particle Astrophysics 2025 (CosPA 2025), IBS Science Culture Center, Daejeon, Korea, 07 - 11 July 2025 ---- (Plenary Talk) [Link],
Dynamical system as a powerful tool for the stability analysis of cosmological solutions @ Vietnam Institute for Advanced Study in Mathematics - VIASM, Hanoi, 23 May 2025 ---- (Invited Seminar Talk) [Link],
On the stability of de Sitter inflationary universes in some nontrivial extensions of the Starobinsky model @ The 49th Vietnam Conference on Theoretical Physics (VCTP-49), Hue, 30 July - 2 August 2024 [Link],
Viable anisotropic k-inflation models in the presence of one-form or two-form fields @ The 29th International Symposium on Particles, String and Cosmology (PASCOS 2024), ICISE, Quy Nhon, 07 - 13 July 2024 [Link],
Counterexamples to the cosmic no-hair conjecture @ Vietnam Institute for Advanced Study in Mathematics - VIASM, Hanoi, 24 November 2023 ---- (Invited Seminar Talk) [Link],
CMB imprints of non-canonical anisotropic inflation @ Windows on the Universe 2023 (the 30th Anniversary Conference of the Rencontres du Vietnam), ICISE, Quy Nhon, 06 - 12 August 2023 [Link],
Counterexamples to the cosmic no-hair conjecture @ Phenikaa Mathematics Department, Hanoi, 24 April 2023 ---- (Invited Talk),
CMB imprints of non-canonical anisotropic inflation @ KEK Theory Meeting on Particle Physics Phenomenology (KEK-PH2022) and International Joint Workshop on the Standard Model and beyond, KEK, Japan, 29 November - 02 December 2022 ----- (Invited Talk) [Link],
No-go theorem for inflation in Ricci-inverse gravity @ The 47th Vietnam Conference on Theoretical Physics (VCTP-47), Tuy Hoa, 01 - 04 August 2022 ----- (Invited Talk) [Link],
On a viable anisotropic power-law k-inflation model @ The 46th Vietnam Conference on Theoretical Physics (VCTP-46), Hanoi, 04 - 06 October 2021 [Link],
Black holes: From theory to reality (Hố đen: Từ lý thuyết tới thực tại), Seminar @ Le Quy Don Technical University, Hanoi, 30 November 2020 ---- (Invited Talk),
Five-dimensional black hole solutions of scalar-vector Kalb-Ramond model @ The 45th Vietnam Conference on Theoretical Physics (VCTP-45), Vinh Yen, 12 - 14 October 2020 [Link],
The golden age of cosmology (kỷ nguyên vàng của vũ trụ học), Public Lecture @ The conference organized by Vietnam Physical Society, Hanoi 19 June 2020 at Vietnam National Space Center,
The validity of the cosmic no-hair conjecture in some anisotropic inflationary models @ Centre for Theoretical Physics, Jamia Millia Islamia University, New Delhi, India, 27 February 2020 ---- (Invited Talk),
On higher dimensional massive (bi-)gravity @ Department of Mathematics, Netaji Subhas University of Technology, New Delhi, India, 21 February 2020 ---- (Invited Talk),
Higher dimensional nonlinear massive gravity @ Centre for Theoretical Physics, Jamia Millia Islamia University, New Delhi, India, 20 February 2020 ---- (Invited Talk),
On the golden age of cosmology @ Phenikaa Institute for Advanced Study, 21 November 2019,
Counterexamples to the Hawking's cosmic no-hair conjecture, Colloquium @ Institute of Physics, National Chiao Tung University, 13 November 2019 ---- (Invited Talk),
No small hairs in anisotropic power-law Gauss-Bonnet inflation @ The 15th Rencontres du Vietnam on Cosmology, ICISE Quy Nhon, 11 - 17 August 2019 [Link],
On a five dimensional counterexample to the cosmic no-hair conjecture @ The 44th Vietnam Conference on Theoretical Physics (VCTP-44), Dong Hoi 2019 [Link],
On a five dimensional counterexample to the cosmic no-hair conjecture @ The second international workshop "Particles, Gravitation and the Universe" (PGU 2018), Hanoi 10 - 15 December 2018 [Link],
Schwarzschild-Tangherlini black holes in five-dimensional massive (bi-)gravity @ The 48th International Symposium on Multiparticle Dynamics (ISMD2018), NTU-IAS and NUS, Singapore, 03 - 07 September 2018 ----- (Invited Talk) [Link],
Is the cosmic no-hair conjecture valid in conformal-violating Maxwell models? @ Windows on the Universe, The 25th Anniversary Conference of the Rencontres du Vietnam, ICISE Quy Nhon 2018 [Link],
On a new anisotropic inflation model @ The 43rd National Conference on Theoretical Physics (NCTP-43), ICISE Quy Nhon 2018 [Link],
On the fate of cosmic no-hair conjecture in an anisotropically inflating model @ Hot Topics in General Relativity and Gravitation 3 (HTGRG-3), ICISE Quy Nhon 2017 [Link],
Higher dimensional massive (bi-)gravity: Constructions and solutions @ Hot Topics in General Relativity and Gravitation 3 (HTGRG-3), ICISE Quy Nhon 2017 [Link],
On the validity of cosmic no-hair conjecture in an anisotropic inflationary model @ The 42nd National Conference on Theoretical Physics (NCTP-42), Can Tho 2017 ----- (Invited Talk) [Link],
On higher dimensional massive bi-gravity @ Hanoi International Workshop "Gravitation and the Universe, Hanoi 2016 [Link],
On five-dimensional massive (bi)gravity @ The 41st National Conference on Theoretical Physics (NCTP-41), Nha Trang 2016 [Link],
On higher dimensional nonlinear massive gravity @ The 22nd International Symposium on Particles, String and Cosmology (PASCOS2016), ICISE Quy Nhon 2016 [Link]