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PHY 7 11 Classical Mechanics and Mathematical Methods 11-11:50 AM MWF Olin 107 Plan for Lecture 19: Read Chapter 7 & Appendices A-D Generalization of the one dimensional wave equation various mathematical problems and techniques including: Laplace transforms Complex variables
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PHY 711 Classical Mechanics and Mathematical Methods • 11-11:50 AM MWF Olin 107 • Plan for Lecture 19: • Read Chapter 7 & Appendices A-D • Generalization of the one dimensional wave equation various mathematical problems and techniques including: • Laplace transforms • Complex variables • Contour integrals PHY 711 Fall 2016 -- Lecture 19
Complex numbers Functions of complex variables Derivatives: Cauchy-Riemann equations PHY 711 Fall 2016 -- Lecture 19
Analytic function PHY 711 Fall 2016 -- Lecture 19
Some details PHY 711 Fall 2016 -- Lecture 19
Example: Im(z) Re(z) PHY 711 Fall 2016 -- Lecture 19
Another example: Im(z) Re(z) PHY 711 Fall 2016 -- Lecture 19
Cauchy integral theorem for analytic function f(z): PHY 711 Fall 2016 -- Lecture 19
Example Im(z) Re(z) PHY 711 Fall 2016 -- Lecture 19
Example -- continued Im(z) Re(z) PHY 711 Fall 2016 -- Lecture 19
Example -- continued x Im(z’) Re(z’) PHY 711 Fall 2016 -- Lecture 19
Example -- continued Kramers-Kronig relationships PHY 711 Fall 2016 -- Lecture 19
Comment on evaluating principal parts integrals y’ x’ PHY 711 Fall 2016 -- Lecture 19
b(x’) -2L -L x’ 2L L PHY 711 Fall 2016 -- Lecture 19
For our example: b(x) a(x) PHY 711 Fall 2016 -- Lecture 19