105 citations · 484 across the 20 of their papers we have counts for
5 papers · 1 filter
Gravitating solitons and black holes with synchronised hair in the four dimensional O(3) sigma-model
C. Herdeiro, I. Perapechka, E. Radu +1
We consider the non-linear sigma-model, composed of three real scalar fields with a standard kinetic term and with a symmetry breaking potential in four spacetime d…
Soliton solutions of the fermion-Skyrmion system in (2+1) dimensions
Ilya Perapechka, Nobuyuki Sawado, Yakov Shnir
We study effects of backreaction of the fermionic modes localized by the baby Skyrmion in the (2+1)-dimensional Skyrme model. It is shown that there is a tower of fermionic modes o…
Determination of from static QCD potential: OPE with renormalon subtraction and lattice QCD
Hiromasa Takaura, Takashi Kaneko, Yuichiro Kiyo +1
We determine the strong coupling constant from the static QCD potential by matching a theoretical calculation with a lattice QCD computation. We employ a new theoretical form…
Q-balls without a potential
V. Loiko, I. Perapechka, Ya. Shnir
We study non-topological Q-ball solutions of the (3+1)-dimensional Friedberg-Lee-Sirlin two-component model. The limiting case of vanishing potential term yields an example of hair…
Yang-Mills solitons in gravity
Ilya Perapechka, Yakov Shnir
We construct new family of spherically symmetric regular solutions of Yang-Mills theory coupled to pure gravity. The particle-like field configurations possess non-in…