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SUMMARY:Ali Seraj (Brussels U. and Intl. Solvay Inst.\, Brussels)
DTSTART:20210701T133000Z
DTEND:20210701T143000Z
DTSTAMP:20260423T021244Z
UID:CENTRA/46
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CENTRA/46/">
 Gravitational breathing memory and dual symmetries</a>\nby Ali Seraj (Brus
 sels U. and Intl. Solvay Inst.\, Brussels) as part of CENTRA Seminar\n\n\n
 Abstract\nBrans-Dicke theory contains an additional propagating mode which
  causes homogeneous expansion and contraction of test bodies in transverse
  directions. This "breathing" mode is associated with novel memory effects
  in addition to those of general relativity. Standard tensor mode memories
  are related to a symmetry principle: they are determined by the balance e
 quations corresponding to the BMS symmetries. In this paper\, we show that
  the leading and subleading breathing memory effects are determined by the
  balance equations associated with the leading and "overleading" asymptoti
 c symmetries of a dual formulation of the scalar field in terms of a two-f
 orm gauge field. The memory effect causes a transition in the vacuum of th
 e dual gauge theory. These results highlight the significance of dual char
 ges and the physical role of overleading asymptotic symmetries.\n
LOCATION:https://researchseminars.org/talk/CENTRA/46/
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