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SUMMARY:Higgs Vortices and Black Hole Hair - Professor Ruth Gregory\, Depa
 rtment of Physics\, Durham University
DTSTART:20140514T150000Z
DTEND:20140514T160000Z
UID:TALK49071@talks.cam.ac.uk
CONTACT:Leona Hope-Coles
DESCRIPTION:Black holes are one of the most fascinating objects in theoret
 ical gravity - they are the logical conclusion of a description in which t
 he nonlinear attraction of matter eventually causes it to cut off from the
  outside world. The description of a black hole is particularly simple - t
 hey are characterised by mass\, charge and angular momentum - the lack of 
 larger numbers of parameters being known as "no hair" theorems. Yet the no
  hair theorems ignore the effects of nonlinearity in physical systems\, an
 d in particular\, nonlinearity in the field theories used to describe matt
 er. I will discuss how black holes can acquire very spectacular hair when 
 symmetries of nature are spontaneously broken - in the form of Higgs vorti
 ces. I will show how these vacuum defects interact with the event horizon\
 , and cause it to buckle and change in shape. Although the black hole can 
 be bland\, it can have rather literal\, and very long hair!\n
LOCATION:Pippard Lecture Theatre\, Cavendish Laboratory
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