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SUMMARY:Eric Poisson (University of Guelph)
DTSTART:20201016T170000Z
DTEND:20201016T180000Z
DTSTAMP:20260423T005844Z
UID:CMU-TP/15
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/CMU-TP/15/">
 Love tensor of a slowly rotating body</a>\nby Eric Poisson (University of 
 Guelph) as part of Carnegie Mellon theoretical physics\n\n\nAbstract\nA ro
 tating body immersed in a gravitomagnetic tidal field is subjected to a Lo
 rentz-like force $v \\times B$\, where $v$ is the rotational velocity\, an
 d $B$ is the gravitomagnetic field\, which is produced by mass currents as
 sociated with the companion’s orbital motion. The body’s response to t
 his force can be described in terms of a tidal polarizability. In this tal
 k I describe a post-Newtonian theory of this tidal polarizability\, which 
 takes the form of a Love tensor\, a four-index object that relates the bod
 y's current quadrupole moment $S_{jk}$ to the gravitomagnetic tidal moment
  $B_{jk}$. The tensorial nature of this quantity has to do with the fact t
 hat each $e^{i m \\phi}$ piece of the tidal force gives rise to an m-speci
 fic velocity perturbation\, and therefore to a tidal polarizability that d
 epends on m. The collection of these m-specific Love numbers makes up the 
 Love tensor.\n
LOCATION:https://researchseminars.org/talk/CMU-TP/15/
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