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Composite quantum particles at the interface with gravity - foundations and new insights

  • 3 Mar 2022
  • 1:00 PM

The first AIP Theoretical Physics seminar for the year will be given by Magdalena Zych from the University of Queensland

Composite quantum particles at the interface with gravity - foundations and new insights

A major goal of modern physics is to understand and test the regime where quantum mechanics and general relativity both play a role. Until recently, new effects of this regime were thought to be relevant only at high energies or in strong gravitational fields. I will discuss how and why looking at composite particles — with internal dynamical degrees of freedom — opens new avenues and may finally enable laboratory tests of quantum and general relativistic effects.  I will also show that such particles have a natural interpretation as ideal quantum clocks, detectors, and even thermometers, and will highlight recent insights arising from this approach: e.g. that semi-classical states of free composite particles are not Gaussian but a  new class of states derived from a new uncertainty inequality — for configuration space rather than for phase space variables.

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