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        學術報告

        學術活動

        學術報告
        06/28 2022 Seminar
        • Title題目 A hydrodynamic picture of domain wall velocities
        • Speaker報告人 Prof. Matti Jarvinen (APCTP)
        • Date日期 2022年06月28日 10:00
        • Venue地點 Join Zoom Meeting https://zoom.us/j/89671036906?pwd=0FQionLA6jVrQfzwoPHHUBVGx4FJo8.1 Meeting ID: 896 7103 6906 Passcode: 505276
        • Abstract摘要

              Physics of domain walls and bubble nucleation is important especially in view of applications to the early universe and production of gravitational waves. I demonstrate that domain walls and their movement for a class of strongly coupled theories can be described in terms of a simple four dimensional "extended" hydrodynamic model. This model puts together perfect fluid description of the strongly coupled fluid with additional scalar field which is active near the domain wall. I go on analyzing the velocity of the moving domain wall, which is usually challenging and thought to incorporate out-of-equilibrium physics. I obtain a simple formula for the velocity essentially in terms of the equation of state and perfect fluid hydrodynamics.


            Contact聯系人 李理 
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