Ya Shnir

collaborators

4 papers

hep-th2025

Two types of boson stars in $U (1)$ gauged $3 + 1$ -dimensional $O (3)$ sigma-model

Jutta Kunz, Aliaksei Mikhaliuk, Yakov Shnir

We investigate boson stars in an $O (3)$ scalar field theory with a symmetry-breaking potential. By constructing numerically spherically symmetric solutions, we demonstrate that the…

hep-th2025

Boson stars in the $U (1)$ gauged 3+1 dimensional $O (3)$ sigma-model

Yakov Shnir, Aliaksei Mikhaliuk

We study regular self-gravitating non-topological soliton solutions of the $U (1)$ gauged non-linear $O (3)$ sigma model with the usual kinetic term and a simple symmetry breaking po…

hep-th2025

$U (1)$ gauged non-topological solitons in the 3+1 dimensional $O (3)$ sigma-model

Luiz A. Ferreira, Aliaksei Mikhaliuk, Yakov Shnir

We present and study new non-topological soliton solutions in the $U (1)$ gauged non-linear $O (3)$ sigma model with a symmetry breaking potential in 3+1 dimensional flat space-time.…

hep-th2025

Fermions localized on $U (1)$ gauged Q-balls

Vladimir Dzhunushaliev, Vladimir Folomeev, Yakov Shnir

The axially symmetric $U (1)$ gauged self-interacting Q-balls are shown to support normalizable fermionic bound state, minimally coupled to the electromagnetic field of the Q-ball.…

Two types of boson stars in U(1) gauged 3+1-dimensional O(3) sigma-model

Boson stars in the U(1) gauged 3+1 dimensional O(3) sigma-model

U(1) gauged non-topological solitons in the 3+1 dimensional O(3) sigma-model

Fermions localized on U(1) gauged Q-balls

Two types of boson stars in $U (1)$ gauged $3 + 1$ -dimensional $O (3)$ sigma-model

Boson stars in the $U (1)$ gauged 3+1 dimensional $O (3)$ sigma-model

$U (1)$ gauged non-topological solitons in the 3+1 dimensional $O (3)$ sigma-model

Fermions localized on $U (1)$ gauged Q-balls