Essays about: "graviton"
Showing result 1 - 5 of 7 essays containing the word graviton.
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1. Review of Black-hole Amplitudes
University essay from Uppsala universitet/Teoretisk fysikAbstract : Abstract: In this review, we referred to several recent works about the black-hole amplitudes. By regarding the black holes as elementary particles, we wrote down the amplitudeswhich describe the black-hole graviton scattering. READ MORE
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2. Gravitational Waves in Bimetric Gravity
University essay from Uppsala universitet/Institutionen för fysik och astronomiAbstract : Understanding the cause of the accelerated expansion of the Universe is one of the most pressing issues in modern cosmology. An alternative to the LambdaCDM-model is bimetric gravity which is an extension of Einstein's theory of general relativity. READ MORE
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3. Mass-Singularity Structure of QED and Perturbative Quantum Gravity Scatterings
University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisationAbstract : In this thesis, the mass singularities occurring in the cross-section of electron scattering processes are investigated. Two types of scatterings are studied: Quantum Electrodynamics (QED) scatterings, and Perturbative Quantum Gravity (PQG) scatterings. READ MORE
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4. On the Entropy of Jets
University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisationAbstract : High energy particle collisions often produce large numbers of partons in the final state, which are clustered together in collimated sprays called jets. A recent paper [1] introduces the concept of jet entropy, which is an observable that quantifies the entanglement between the resolved and unresolved parts of a jet. READ MORE
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5. Simplifying quantum gravity calculations
University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisationAbstract : The Einstein-Hilbert Lagrangian for gravity is non-renormalizable at loop level. However, it can be treated in the effective field theory framework which means that gravity as an effective theory can be renormalized when a proper expansion of the effective Lagrangian is made. READ MORE