PIRSA:C07024 - Experimental Search for Quantum Gravity
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Experimental Search for Quantum Gravity
Organizer(s): Sabine Hossenfelder Bianca Dittrich Tomasz Konopka Achim Kempf
Collection URL: http://pirsa.org/C07024
Quantum-Gravity-induced Decoherence and intrinsic CPT Violation: towards smoking-gun experimental evidence in entangled particle states?
Abstract: Quantum Gravity may be entirely unconventional as a theory, leading to completely unfamiliar (compared to other fields of physics) and unexpected experimental signatures. One particularly interesting avenue for research in that field is the study of models in which quantum gravity operates as a deco...
read moreDate: 05/11/2007 - 10:00 am
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Planck Meets Hubble and Boltzmann: Holographic Quantum Foam and Cosmology
Speaker(s):
Jack Ng - University of North Carolina
Abstract: Quantum fluctuations of spacetime give rise to quantum foam, and black hole physics dictates that the foam is of holographic type. One way to detect quantum foam is to exploit the fact that an electromagnetic wavefront will acquire uncertainties in direction as well as phase as it propagates through...
read moreDate: 05/11/2007 - 11:15 am
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Inflation with a Cutoff: Proposals and Problems
Speaker(s):
Jens Niemeyer - Lehrstuhl für Astronomie Universitat Wurzburg
Abstract: The possible existence of a physical UV cutoff in dynamical spacetimes raises a number of conceptual and practical questions. If the validity of Lorentz Invariance is considered unreliable above the cutoff, the creation or destruction of quantum modes and the choice of their initial state need to be...
read moreDate: 05/11/2007 - 2:30 pm
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The quantum origin of the cosmological structure: an arena for quantum gravity phenomenology
Abstract: I will review the shortcomings of the standard account of the origin of anisotropies and in-homogeneities in inflationary cosmology. I will argue that something beyond the established paradigm of physics in needed for a satisfactory explanation of the process by which the seeds of structure emerge f...
read moreDate: 05/11/2007 - 4:00 pm
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Emergent dispersion relations --- lessons for quantum gravity
Speaker(s):
Matt Visser - Universidad Autonoma Metropolitana
Abstract: The dispersion relations that naturally arise in the known emergent/analogue spacetimes typically violate analogue Lorentz invariance at high energy, but do not do so in completely arbitrary manner. This suggests that a search for arbitrary violations of Lorentz invariance is possibly overkill: Ther...
read moreDate: 05/11/2007 - 5:00 pm
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Mass-generating mechanism for Nambu-Goldstone bosons in emergent spacetime and its application for quantum gravity phenomenology
Abstract: Effective field theories (EFTs) have been widely used as a framework in order to place constraints on the Planck suppressed Lorentz violations predicted by various models of quantum gravity. There are however technical problems in the EFT framework when it comes to ensuring that small Lorentz violat...
read moreDate: 05/11/2007 - 6:00 pm
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Symmetry deformation from quantum relational observables
Speaker(s):
Florian Girelli - Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Abstract: Observables in (quantum) General Relativity can be constructed from (quantum) reference frame -- a physical observable is then a relation between a system of interest and the reference frame. A possible interpretation of DSR can be derived from the notion of deformed reference frame (cf Liberati-Son...
read moreDate: 06/11/2007 - 11:15 am
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Out-of-this-World Physics: Probing Quantum Gravity in the Lab
Abstract: I'll give a broad review of various ways of looking for large, small, and warped extra dimensions and will give only a brief review of the black-hole business, particularly an introduction based on the original paper we wrote and recent work on Randall-Sundrum black holes.
Date: 06/11/2007 - 2:30 pm
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Towards a Phenomenology of Quantum Gravity?
Speaker(s):
John Ellis - European Organization for Nuclear Research (CERN)
Abstract: This talk will review proposed tests of ideas about quantum gravity, including searches for quantum decoherence, probes of the possible energy-dependence of the velocity of light, and the nature of vacuum energy. Motivations will be drawn from a non-critical string theory framework.
Date: 06/11/2007 - 4:15 pm
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Phenomenology of black holes in particle colliders and cosmic ray showers
Abstract: If large extra dimensions exist, microscopic black holes may be created in TeV particle colliders and in Earth's atmosphere by the collisions of ultrahigh-energy cosmic rays with atmospheric nuclei. The decay of these black holes could soon be observed at the Large Hadron Collider or the Pierre Auge...
read moreDate: 06/11/2007 - 5:30 pm
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Possible strategies for the search for quantum gravity induced effects
Abstract: We investigate the abstract features of the abstract, and find an abstractly abstracted abstract. We investigate the abstract features of the abstract, and find an abstractly abstracted abstract. We investigate the abstract features of the abstract, and find an abstractly abstracted abstract. We inv...
read moreDate: 07/11/2007 - 11:00 am
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Gravitational collapse in quantum gravity
Abstract: I will describe work aimed at understanding the dynamics of gravitational collapse in a fully quantum setting. Its emphasis is on the role played by fundamental discreteness. The approach used suggests modifications of a black hole's mass loss rate and thermodynamical properties. Numerical simulatio...
read moreDate: 07/11/2007 - 3:45 pm
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Phenomenology of Discrete Space: Possible Tests
Abstract: I will discuss possible tests of the grainularity of space including modified dispersion relations in the formation of white dwarfs and neutron stars and constraints on a stochastic direction field from atomic system tests.
Date: 07/11/2007 - 5:00 pm
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Black hole production at high energies
Speaker(s):
Steve Giddings - University of California at Santa Barbara (UCSB)
Abstract: I will survey some of the physics of TeV-scale black hole production, as well as outstanding issues. I will also discuss some of the conceptual issues surrounding high-energy black hole production.
Date: 08/11/2007 - 10:00 am
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