Seminar “Theory of hadronic matter under extreme conditions”

Date and Time: Wednesday, 20 December 2023, at 4:00 PM

Venue: Blokhintsev Hall (4th floor), Bogoliubov Laboratory of Theoretical Physics; online on Zoom

More information on the seminar and the link to connect

Seminar topic: “Pion-sigma meson vortices in rotating systems”

Speaker: Dmitry Voskresensky

Abstract:

Possibilities of the formation of the pion-sigma meson field vortices in a rotating empty vessel (in vacuum) and in the pion-sigma Bose-Einstein condensates at a dynamically fixed particle number are studied within the linear sigma model at zero temperature. The charged and neutral complex field ansatze are studied. First it is analysed, which of these configurations is energetically favorable in case of the system at rest. Then conditions are found, at which a chiral field storm can arise in a rotating empty vessel. An important role played by the electric field is demonstrated. Its appearance may allow for formation of a supervortex. Influence of magnetic field is also studied. Then it is shown that description of the charged and neutral rotating pion-sigma Bose-Einstein condensates is analogous to that for the Bose-Einstein condensates in cold atomic gases. Conditions for existence of the rigid-body rotation of the vortex lattice are analysed. Effects for vortex fields in rotating vessels, energetic heavy-ion collisions and in rotating superheavy nuclei/nuclearites are discussed.