Würzburg 2018 – wissenschaftliches Programm
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GR: Fachverband Gravitation und Relativitätstheorie
GR 16: Quantum Gravity III
GR 16.3: Vortrag
Freitag, 23. März 2018, 11:30–11:45, NW-Bau - HS3
Constraints on Non-Commutative SpaceTime using CMB Data in Coherent State approach — •Dipanshu Gupta1,2 and Piero Nicolini1,2 — 1Frankfurt Institute for Advanced Studies, Frankfurt am Main, Germany — 2Goethe Universität Frankfurt am Main, Frankfurt am Main, Germany
From the seminal work of Witten and Seiberg, it has been shown that noncommutativity is inherent in String Theory and a good low energy approximation for fields. We try to constrain the length scale of noncommutativity of spacetime using a new power spectrum of CMB Anisotropy derived using the Coherent State approach to noncommutativity instead of Star-Product approach in widespread literature. This formalism has many advantages, one of which is the preservation of Lorentz Invariance. We compute this new power spectrum and compare it with available data from CMB Experiments to put a new bound on the noncommutative parameter.