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SUMMARY:Hidden fluctuations close to a quantum bicritical point - Corentin
 g Morice\, CEA\, University of Paris-Saclay.
DTSTART:20170315T111500Z
DTEND:20170315T121500Z
UID:TALK71055@talks.cam.ac.uk
CONTACT:Helen Verrechia
DESCRIPTION:We describe physical properties arising in the vicinity of two
  coupled quantum phase transitions by considering a phenomenological model
  based on two scalar order parameter fields locally coupled biquadraticall
 y and having a common quantum critical point as a function of a quantum tu
 ning parameter such as pressure or magnetic field.  A self-consistent trea
 tment suggests that the uniform static susceptibilities of the two order p
 arameter fields may have the same qualitative form at low temperature even
  where the forms differ sharply in the absence of the biquadratic coupling
 . The possible limitations of the self-consistent analysis leading to this
  prediction are considered.
LOCATION:Mott Seminar Room (531)\, Cavendish Laboratory\, Department of Ph
 ysics
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