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Department of Atomic Energy, Govt. of India
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Past Seminar

Title              :

*Non-classical s**pace-time in (loop) quantum gravity*

Speaker         : Suddhasattwa Brahma, Asia Pacific Center for Theoretical Physics
Date                : July 25, 2018
Time               : 11:00 AM
Venue            : Room 3307
Abstract        :

*General relativity typically predicts singularities when applied to high curvature regimes such as the very early universe or within the cores of black-holes. Therefore, quantum gravity becomes essential in describing the physics of such regions. In particular, loop quantum gravity, when applied to such scenarios, leads to singularity-resolution due to nontrivial quantum corrections resulting in the emergence of modified dynamics near Planck scales. However, a quantum theory of gravity must also describe a theory of quantum space-time. In this talk, I shall focus on the emergence of non-Riemannian space-time due to loop quantum gravity corrections, the main physical consequence of which is dynamical \'signature-change\'. Similarities with other approaches such as the Hartle-Hawking proposal and non-commutative geometry shall also be briefly discussed. *

 

 

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