Essays about: "Spinors"

Showing result 1 - 5 of 8 essays containing the word Spinors.

  1. 1. Spin Representations, Clifford Algebras and Spinors

    University essay from Uppsala universitet/Matematiska institutionen

    Author : Simon Wogel; [2023]
    Keywords : Algebras; Clifford algebras; Spinors; Representations; Lie algebras; Lie groups; Algebror; Cliffordalgebror; Spinorer; Representationer; Liealgebror; Liegrupper;

    Abstract : We begin by giving some theoretical background to the underlying concepts of spin representations and spinors. This is done from the perspective of Lie groups and Lie algebras. In particular, we discuss the functionality of Clifford algebras in the determination of the double-covering spin groups. READ MORE

  3. 2. Review of Black-hole Amplitudes

    University essay from Uppsala universitet/Teoretisk fysik

    Author : Chen Huang; [2022]
    Keywords : ;

    Abstract : 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

  4. 3. Exploring properties of a 10-dimensional pure spinor twistor transform

    University essay from Uppsala universitet/Teoretisk fysik

    Author : Cesar Garcia; [2021]
    Keywords : String Theory; Twistors; Spinor-helicity variables;

    Abstract : In this review, several tools used in the study of super-Yang-Mills scattering amplitudes are discussed, namely spinor-helicity and (super)twistor variables. These variables are then implemented in string theories in 4D, and a suitable generalization to 10D using pure spinors is discussed. READ MORE

  5. 4. On the (1/2,1/2) Representation of the Lorentz Group and the Discrete CPT Symmetries

    University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Author : Nikolaj Skog Pirinen; [2021]
    Keywords : The Lorentz Group; Group Theory; Quantum Field Theory; CPT; Symmetry; Spinors; Representation Theory; Physics and Astronomy;

    Abstract : This thesis derives the explicit form of the elements of the (1/2,1/2) representation of the Lorentz group, by actually performing a direct product of the chiral (1/2,0)- and (0,1/2)-representations. The Lorentz transformations of fourvectors are thereafter recovered from this direct-product representation, allowing the derivation of a transformation matrix between the fourvector- and direct product basis. READ MORE

  6. 5. Employing the little group symmetry within the spinor-helicity formalism to constrain scattering amplitudes

    University essay from Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Author : Samyak Parmar; [2021]
    Keywords : little group scaling; little group; spinor-helicity formalism; Physics and Astronomy;

    Abstract : This thesis aims to describe the little group scaling and how it simplifies the calculation of scattering amplitudes. The little group has the defining property that it leaves a particular four-momentum invariant, which is used to describe how the internal structure of a particle is transformed under the little group. READ MORE