42 citations · 61 across the 3 of their papers we have counts for
9 papers
Matter matters in Einstein-Cartan gravity
Georgios K. Karananas, Mikhail Shaposhnikov, Andrey Shkerin +1
We study scalar, fermionic and gauge fields coupled nonminimally to gravity in the Einstein-Cartan formulation. We construct a wide class of models with nondynamical torsion whose…
Unveiling complex vector dark matter by magnetic field
Emin Nugaev, Andrey Shkerin
We discuss the possibility that dark matter is made of a new complex massive vector field with a global -symmetry. The field interacts with the Standard Model via coupling to…
Quantum Effects in Palatini Higgs Inflation
Mikhail Shaposhnikov, Andrey Shkerin, Sebastian Zell
We study quantum effects in Higgs inflation in the Palatini formulation of gravity, in which the metric and connection are treated as independent variables. We exploit the fact tha…
Review of non-topological solitons in theories with -symmetry
Emin Nugaev, Andrey Shkerin
We provide a review of non-topological solitonic solutions arising in theories with a complex scalar field and global or gauge -symmetry. It covers Q-balls, homogeneous charg…
Dilaton-assisted generation of the Fermi scale from the Planck scale
Andrey Shkerin
In scale-invariant theories of gravity the Planck mass , which appears due to spontaneous symmetry breaking, can be the only scale at the classical level. It was argued that t…
Vibrational modes of Q-balls
A. Kovtun, E. Nugaev, A. Shkerin
We study linear perturbations of classically stable Q-balls in theories admitting analytic solutions. Although the corresponding boundary value problem is non-Hermitian, the analys…