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Gravity on large scales is relatively well understood. For galaxies, planets and apples: we have Einstein’s General Relativity with which to make accurate predictions. But on small scales, where quantum mechanics becomes important, gravity is more difficult to understand, and as a result we lack precise descriptions of various natural phenomena (such as black holes).
One way to make progress in in our search for quantum gravity is to start from the large scale theory we know and love (at the ‘bottom’), and look for ways in which it may be modified and improved as we zoom in to smaller scales (going ‘up’ to a more fundamental theory).
Recent progress in ‘Effective Field Theory’ may shed some light on the connections between large and small scale physics. By exploiting certain physical properties of scattering probabilities (e.g. that they are unitary, causal and local), one can derive an infinite number of constraints which any large scale theory must satisfy in order to admit a sensible small scale completion.
In this talk, I will provide an overview of these new ‘positivity constraints’, and discuss their implications for quantum gravity.
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Seminar by Mr. Arthur Yamashita (PhD student, Tokyo Institute of Technology)
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7th Innovation Seminar Series
"Investors View on Pharma and Biotech - A Personal Review"
Hans Küpper, Ph.D.
Senior Venture Capital and Life Science Professional
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Seminar by Dr. Andrzej Banburski, MIT
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Neural Computation Unit (Doya Unit)
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Prof. Nobuhiko Tokuriki, Michael Smith Laboratories, University of British Columbia, Vancouver, BC Canada
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Refreshments provided.
No registration required.
Interpretation available.
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Seminar "Towards a tensionless string field theory for six-dimensional (2,0) CFT" by Dr. Hidehiko Shimada, Staff Scientist, Mathematical and Theoretical Physics Unit at OIST. Jun 13 (Wed) at C756-L3
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Seminar hosted by TQM unit
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"Performance disruption and predictive processing in expert sensorimotor skills" by Dr. Massimiliano L. Cappuccio, Associate Professor of Cognitive Science at UAE University