MG13 - Talk detail |
Participant |
Gharibyan, Vahagn | |||||||
Institution |
DESY - Notkestraße 85 - Hamburg - Hamburg - Germany | |||||||
Session |
PS |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
Planck scale gravity test with accelerators | |||||
Co-authors | ||||||||
Abstract |
Quantum gravity predicts unusual properties of space-time at very short distances. In particular, near the Planck length, around 1E-35 m, empty space may behave as a crystal, singly or doubly refractive. However, this hypothesis remains uncheckable for any direct measurement since the smallest distance accessible in experiment is about 1E-19 m at the LHC. Here I propose a laboratory test to measure the space refractivity and birefringence predicted by quantum gravity. A sensitivity from 1E-31 m down to the Planck length could be reached at existent GeV and future sub-TeV energy lepton accelerators using laser Compton scattering. There are already experimental hints for quantum gravity signature at distances approaching the Planck length by 5-7 orders of magnitude, derived from SLC and HERA data. Dedicated experiments on this way may open a so far invisible quantum gravitational realm. |
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Session |
QG2 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
Planck scale gravity test with accelerators | |||||
Co-authors | ||||||||
Abstract |
Quantum gravity predicts unusual properties of space-time at very short distances. In particular, near the Planck length, around 1E-35 m, empty space may behave as a crystal, singly or doubly refractive. However, this hypothesis remains uncheckable for any direct measurement since the smallest distance accessible in experiment is about 1E-19 m at the LHC. Here I propose a laboratory test to measure the space refractivity and birefringence predicted by quantum gravity. A sensitivity from 1E-31 m down to the Planck length could be reached at existent GeV and future sub-TeV energy lepton accelerators using laser Compton scattering. There are already experimental hints for quantum gravity signature at distances approaching the Planck length by 5-7 orders of magnitude, derived from SLC and HERA data. Dedicated experiments on this way may open a so far invisible quantum gravitational realm. |
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