15 citations · 24 across the 3 of their papers we have counts for
5 papers
Real-time diagram technique for instantonic systems
Nikita Kolganov
The Schwinger-Keldysh diagram technique is usually involved in the calculation of real-time in-in correlation functions. In the case of a thermal state, one can analytically contin…
Generalized unimodular gravity as a form of k-essence
A. O. Barvinsky, N. Kolganov, A. Vikman
We consider modifications of general relativity characterized by a special noncovariant constraint on metric coefficients, which effectively generates a perfect-fluid type of matte…
Quantum -matrices as universal qubit gates
Nikita Kolganov, Andrey Morozov
We study the Chern-Simons approach to the topological quantum computing. We use quantum -matrices as universal quantum gates and study the approximations of some one-q…
Inflation in generalized unimodular gravity
A. O. Barvinsky, N. Kolganov
The recently suggested generalized unimodular gravity theory, which was originally put forward as a model of dark energy, can serve as a model of cosmological inflation driven by t…
Dynamics of the generalized unimodular gravity theory
A. O. Barvinsky, N. Kolganov, A. Kurov +1
The Hamiltonian formalism of the generalized unimodular gravity theory, which was recently suggested as a model of dark energy, is shown to be a complicated example of constrained…