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PhD Student
My main research focuses on two distinct areas: physics of the early Universe and topological quantum computing. In particular, I'm trying to find out whether the dark sector of our universe can arise from some modified gravity theory and purely gravitational degrees of freedom. In the field of topological quantum computing, I am interested in what properties a certain topological quantum field theory should have in order to efficiently perform quantum computing using the device it describes.
Selected Publications:
- “Dynamics of the generalized unimodular gravity theory,” A. Barvinsky, N. Kolganov, A. Kurov and D. Nesterov, Phys. Rev. D100 no.2, 023542, 2019, arXiv:1903.09897 [hep-th].
- “Inflation in generalized unimodular gravity,” A. Barvinsky and N. Kolganov, Phys.Rev. D100 no.12, 123510, 2019, arXiv:1908.05697 [gr-qc].
- “Quantum R-matrices as universal qubit gates,” N. Kolganov and A. Morozov, JETP Lett., 2020, arXiv:2004.07764 [hep-th].
Publications affiliated with ITMP:
- Hasanov, F.; Kolganov, N. (2024). "Unperturbation theory: reconstructing Lagrangians from instanton fluctuations". arXiv: 2402.07165 [hep-th].
- Barvinsky, A.O.; Kolganov, N. (2023). "Nonequilibrium Schwinger-Keldysh formalism for density matrix states: analytic properties and implications in cosmology". arXiv: 2309.03687 [hep-th].
- Kolganov, N.; Trunin, D.A. (2022). "Classical and quantum butterfly effect in nonlinear vector mechanics". Phys. Rev. D. 106, 025003. arXiv: 2205.05663 [hep-th]. 10.1103/PhysRevD.106.025003.
- Kolganov, N. (2022). "Real-time diagram technique for instantonic systems". Journal of High Energy Physics. 10 (2023) 103. arXiv: 2211.05746 [hep-th]. doi: 10.1007/JHEP10(2023)103.
- Kolganov, N.; Mironov, S.; Morozov, A. (2021). "Large $k$ topological quantum computer". Nuclear Physics B. 987 (2023) 116072. arXiv: 2105.03980 [hep-th]. doi: 10.1016/j.nuclphysb.2023.116072.
- Barvinsky, A.O.; Kolganov, N.; Vikman, A. (2020). "Generalized unimodular gravity as a new form of kk-essence". Physical Review D. 103 (2020), 064035. arXiv: 2011.06521 [gr-qc]. doi: 10.1103/PhysRevD.103.064035.
