Семинар «Теория адронной материи при экстремальных условиях»

Дата и время: среда, 20 декабря 2023 г., в 16:00

Место: аудитория им. Блохинцева (4-й этаж), Лаборатория теоретической физики им. Н.Н. Боголюбова; онлайн-семинар в Zoom

Информация о семинаре и подключении

Тема семинара: «Pion-sigma meson vortices in rotating systems»

Докладчик: Дмитрий Воскресенский

Аннотация:

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.