Quantum Gravity Day 2014

Projective Statistics in Quantum Gravity

Rafael Sorkin
Perimeter Institute for Theoretical Physics

May 22, 2014

PIRSA:14050130
Propagation of particles in discrete spacetime: Can high cosmic rays be a result of Quantum Gravity?

Nosiphiwo Zwane
University of Eswatini

May 22, 2014

PIRSA:14050131
Lorentzian non-locality and off-shell modes

Mehdi Saravani
Goldman Sachs (United States)

May 22, 2014

PIRSA:14050132
Elements of Quantum Theory from limited Information and complementarity

Philipp Hoehn
Okinawa Institute of Science and Technology Graduate University

May 22, 2014

PIRSA:14050133
Vacuogenesis in Discrete Cosomology

Ted Jacobson
University of Maryland, College Park

May 22, 2014

PIRSA:14050134
Cosmological Dynamics of Space As a Quantum Gravity Condensate

Steffen Gielen
University of Sheffield

May 22, 2014

PIRSA:14050135

Projective Statistics in Quantum Gravity

Rafael Sorkin
Perimeter Institute for Theoretical Physics

May 22, 2014

PIRSA:14050130

To the extent that spacetime remains a manifold M on small scales, excitations of the spatial topology can function as particles called topological geons. In a first quantized theory of topological geons (aka continuum quantum gravity without topology change), different irreducible unitary representations of the mapping-class group G of M, yield different superselection sectors of the theory. In some of these sectors the geons behave as fermions, even though gravitons themselves are of course bosons. A still more exotic possibility is "projective statistics", where the operators that permute identical geons only preserve group multiplication up to a phase-factor that cannot be eliminated. (Such a representation must be nonabelian.) I will describe a simple example of this phenomenon with four RP^3 geons.
Propagation of particles in discrete spacetime: Can high cosmic rays be a result of Quantum Gravity?

Nosiphiwo Zwane
University of Eswatini

May 22, 2014

PIRSA:14050131
Lorentzian non-locality and off-shell modes

Mehdi Saravani
Goldman Sachs (United States)

May 22, 2014

PIRSA:14050132
Elements of Quantum Theory from limited Information and complementarity

Philipp Hoehn
Okinawa Institute of Science and Technology Graduate University

May 22, 2014

PIRSA:14050133
Vacuogenesis in Discrete Cosomology

Ted Jacobson
University of Maryland, College Park

May 22, 2014

PIRSA:14050134
Cosmological Dynamics of Space As a Quantum Gravity Condensate

Steffen Gielen
University of Sheffield

May 22, 2014

PIRSA:14050135

Title	Speaker(s)	Date	Talk Type	Info
Projective Statistics in Quantum Gravity	Rafael Sorkin	2014-05-22	Conference	View details
Propagation of particles in discrete spacetime: Can high cosmic rays be a result of Quantum Gravity?	Nosiphiwo Zwane	2014-05-22	Conference	View details
Lorentzian non-locality and off-shell modes	Mehdi Saravani	2014-05-22	Conference	View details
Elements of Quantum Theory from limited Information and complementarity	Philipp Hoehn	2014-05-22	Conference	View details
Vacuogenesis in Discrete Cosomology	Ted Jacobson	2014-05-22	Conference	View details
Cosmological Dynamics of Space As a Quantum Gravity Condensate	Steffen Gielen	2014-05-22	Conference	View details

Quantum Gravity Day 2014

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