4 papers
Towards the τ-function of the quantum groups
Maxim Chepurnoi, Mikhail Sharov
Non-perturbative partition functions of quantum theories constitute a class of functions, which are distinguished satisfying Hirota's bilinear identities(BI). To make this stat…
No-Go theorem in the cubic subclass of Horndeski theory for spherically symmetric dynamical background
S. Mironov, M. Sharov
We consider a general dynamical, spherically symmetric background in the cubic subclass of Horndeski theory and obtain the quadratic action for the perturbations using the DPSV app…
Time-dependent, spherically symmetric background in Kaluza-Klein compactified Horndeski theory and the speed of gravity waves
S. Mironov, M. Sharov, V. Volkova
We revisit the models recently derived from a Kaluza-Klein compactification of higher dimensional Horndeski theory, where the resulting electromagnetic sector features non-trivial…
Linear stability of a time-dependent, spherically symmetric background in beyond Horndeski theory and the speed of gravity waves
S. Mironov, M. Sharov, V. Volkova
We address a dynamical, spherically symmetric background in beyond Horndeski theory and formulate a set of linear stability conditions for high energy perturbation modes above an a…