Essays about: "Hazhar Ghaderi"

Found 4 essays containing the words Hazhar Ghaderi.

  1. 1. Triangle Loop in Scalar Decay and Cutting Rules

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Hazhar Ghaderi; [2013]
    Keywords : Cutkosky cutting rules; Feynman triangle loop diagram; two-fold Dirac delta functions; double Dirac delta functions; Dirac delta distribution; delta distribution;

    Abstract : In this report we will calculate the amplitude for a scalar-to-scalars (φ3  φ2φ2) decay which involves a triangle loop. We compute the real and imaginary part of the amplitude separately and will argue that this is much more straightforward and practical in this case rather than having to deal with or worry about branch cuts of logarithms. READ MORE

  3. 2. The Rare Decay of the Neutral Pion into a Dielectron

    University essay from Uppsala universitet/Kärnfysik

    Author : Hazhar Ghaderi; [2013]
    Keywords : rare pion decay; Mellin transform; Mellin-Barnes representation; dispersive representation; dispersion relation; Kramers-Kronig relations; Cutkosky cutting rules; Feynman Loop diagram calculations;

    Abstract : We give a rather self-contained introduction to the rare pion to dielectron decay which in nontrivial leading order is given by a QED triangle loop. We work within the dispersive framework where the imaginary part of the amplitude is obtained via the Cutkosky rules. We derive these rules in detail. READ MORE

  4. 3. The Phase-Integral Method, The Bohr-Sommerfeld Condition and The Restricted Soap Bubble : with a proposition concerning the associated Legendre equation

    University essay from Uppsala universitet/Institutionen för fysik och astronomi

    Author : Hazhar Ghaderi; [2011]
    Keywords : Bohr-Sommerfeld quantization condition; phase-integral method; hydrogen atom energy levels; isotropic harmonic oscillator energy levels; theorem concerning parameters of the associated Legendre equation; apsidal angle; apsidal angle in semi-classical theory; WKB method; JWKB method; Old quantum mechanics; old quantum theory; Langer modification; half-integral quantization condition; Platform function; platform function of Yngve and Thidé; Fröman Fröman theory; Fröman Fröman method;

    Abstract : After giving a brief background on the subject we introduce in section two the Phase-Integral Method of Fröman & Fröman in terms of the platform function of Yngve and Thidé. In section three we derive a different form of the radial Bohr-Sommerfeld condition in terms of the apsidal angle of the corresponding classical motion. READ MORE

  5. 4. Mountain Pass Theorems with Ekeland’s Variational Principle and an Application tothe Semilinear Dirichlet Problem

    University essay from Uppsala universitet/Analys och tillämpad matematik

    Author : Hazhar Ghaderi; [2011]
    Keywords : ;

    Abstract : .... READ MORE