Sökning: "graviton"

Visar resultat 1 - 5 av 7 uppsatser innehållade ordet graviton.

  1. 1. Review of Black-hole Amplitudes

    L1-uppsats, Uppsala universitet/Teoretisk fysik

    Författare :Chen Huang; [2022]
    Nyckelord :;

    Sammanfattning : 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. LÄS MER

  3. 2. Gravitational Waves in Bimetric Gravity

    Master-uppsats, Uppsala universitet/Institutionen för fysik och astronomi

    Författare :Erik Schildt; [2022]
    Nyckelord :;

    Sammanfattning : 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. LÄS MER

  4. 3. Mass-Singularity Structure of QED and Perturbative Quantum Gravity Scatterings

    Kandidat-uppsats, Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Författare :Santiago Londono Castillo; [2020]
    Nyckelord :perturbative quantum gravity; QED; mass singularities; collinear singularities; soft singularities; singularity cancellation; graviton; Physics and Astronomy;

    Sammanfattning : 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. LÄS MER

  5. 4. On the Entropy of Jets

    Kandidat-uppsats, Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Författare :Eivind Hilmen Jørstad; [2020]
    Nyckelord :Entropy; Jets; QCD; Gravity; Physics and Astronomy;

    Sammanfattning : 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. LÄS MER

  7. 5. Simplifying quantum gravity calculations

    Master-uppsats, Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Författare :Safi Rafie-Zinedine; [2018]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : 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. LÄS MER